I can prove that you are not able to realize your possible risk in your investment on mining. You have no idea and cannot never have idea in which amount will be the difficulty in mining. So your calculations have not taken in consideration something very important in such process. The rezult is that your calculations are not reliable.
Yes I have experience in mining. To much. I have mine with my computer (when this was possible) with gpu and then in cloud mining. The first was short and without to many earnings. The second experience lasted more than 1 year and was in three sites (pb mining, cloudminr.io and cointellect.com). I had earnings from the first (double of the amount invested), loss in the second (a little less than the amount earning from the first investment) and (strange but true) almost nothing from the third (about 10 us dollar earnings). All the three these sites were scammers. I was lucky in the first because invested between the firsts and not lucky in the second because was from the lasts enter on it. Much than luck in the third (which in time was before the last mentioned) because had invested to much but with the profits had from the previous investments. The luck was because the last contracts purchased was not with earnings but mostly with my bitcoins: was a big amount.
But I have knowledge even because I have read even more about this phenomenon. So my overall experience tel, to not mine at all.
But even without all this, it will be enough for me (and for everyone - according to me) to understand that if mining depend from the difficulty, the difficulty is totally unpredictable and can arrive big amounts within 14 days, that this story that continue without end, then can be told without doubt that it will be not possible to made any kind of calculation able to have an reliable conclusion.
Then you can ask me the why of my mining when I knew all this thing. The answer is: firstly because before had not such knowledges and experiences. So was something new and I want to tried this something new. Then even to earn (in the case of cointellect - seemed serious in everything since the moment I made my last investment and a few time after). But the results have from those experiences convince me to tell to everyone that, as for me, mining must not be made because are to many unknown factors. Even those which seems the must (easily) predicable and calculable are only one illusion.
Move into day's of asics (which you are missing from mining experience). Difficulty has gone down a lot on changes. Don't take my word on it look here - https://bitcoinwisdom.com/bitcoin/difficulty It's at bottom of page.
Again I'm not pushing anyone to mine I make 0 even if you mine through my signature. So don't let anyone push you into a investment. But mining is not for all and has change drastically since day's of GPU.
You will find always something to discuss about your topic and this is not my attitude. So I will close this in vain discussion with this my post. No one told that the mining has not changed. I tried to have experience even with the ASIC-s trying to buy one at Butterfly Labs. But haven't it because they promised to ship their in January and didn't was able to ship since October. Than (luckily) I had my refund because was a big amount of money. I had taken a big ASIC with to many ghs for that period. But this (the change you pretend) doesn't change nothing in my discussion. You are making again game of words and in van discussion.
THAT DOESN'T MEAN NOTHING. EVERY KIND OF ASIC DON'T CHANGE THE INABILITY TO PREDICT THE DIFFICULTY. THEN THE PRICE OF ASIC IS SO HIGH THAT DON'T LEAVE TO HAVE EARNINGS. THE MINING MUST REPAY FIRSTLY THE ASIC AND THEN EARN.
Then if the difficulty has gone drown that doesn't mean at all that can be so even in the days to come. Thinking so is to think that a child or like someone who have not even the much little experience in this field.
I have no reason to see your link about the difficulty of mining because I know it very well. And even mentioned data from it only few posts above. But, as I can see, you don't read what it was written by the others. You read only the phrase that tell don't mine. Any other word which argue this phrase it is not important for you. I am bringing again my phrase write two-three posts above:
"If you had no profit during this time when difficulty was up and down since almost one year and the rise was at minimum amounts you can find yourself easily how much can be the earnings if the difficulty rise constantly (no drops as it was verified during the above periods) and in amount more than 10% every 14 days."
See my post above and your find easy this sentence. In that clearly is spoken about the difficulty during the last year. From what had the data which make me to write this sentence? What do you think?
I CAN TELL TO EVERYONE AGAIN MY THOUGHT: DON'T MINE. THIS IS MY SUGGESTION. BUT EVERYONE CAN DO WHAT HE THINK IS BETTER FOR HE/SHE.
PERSONAL MINING IS TO RISKY AT LEAST FOR THE MONEY USED TO BUY EQUIPMENT. CLOD MINING IS NOT PROFITABLE IN THE CASE WHEN THE SITE IS NOT SCAM. BECAUSE MOST OF THOSE ARE NORMALLY SCAMS.
EVERYTHING IS TOLD HAVING IN MIND THE ACTUAL SITUATION. ABOUT THE FUTURE I CANNOT TOLD NOTHING. THINGS MAY CHANGES. WHO KNOWS?