Compare that to interest you might have received from your local bank. Example = 10% interest at a bank per year :
2014 - $7.48 = {$0.748}
2015 - $8.23 = {$0.823}
2016 - $9.05 = {$0.905}
2017 - $9.96 ---> rounded off =
$10-00 <---- The reality will be that banking fees would have been more.
My math may be incorrect, but it is close enough to make a good comparison. It would never trump
$48.14 interest over 3 years vs $7.48. I can
just imagine if this was $1 000 000
10% is a big profit annually and only found in countries which have a very high inflation rate (as far as I know). your calculations are not wrong but they are just not accurate.
for example the banks where I live calculate the profit daily, they pay the profit monthly though. and for that your calculation would be a little bit off. the total after 3 yeas would be $10.10 exactly if you use the daily method. the formula for it can be found in Microsoft Excel if you are interested.
=FV(10%/365,3*365,0,-7.48)
As I said, the math might not be 100% correct and the interest might be a bit high... but it still shows what huge profits you
could make with
Bitcoin compared to interest that you might earn through banks.
... I have yet to see one bank where $7 will not be absorbed by banking
fees. The other thing is... most accounts are suspended and closed once they are not used. Banks will say that idle accounts are closed because
of KYC/AML regulations and to prevent fraud and money laundering.... but the real reason is that idle accounts do not generate income for them.
They want you to make transactions on your accounts so that they can charge you fees. Greedy Mfkers!
, Yes that's the great thing about bitcoin it is increasing over time as you have just $7 last 2014 and now you have $50+ so how much more in the future right? bitcoin is just increasing day by day and no one is stopping it. For me one reason that I love bitcoin is that I can easily trade and sell on bitcoin also I can earn bitcoin without spending anything. When I first joined bitcoin and starting earning I started at scratch so $0 balance then I started to earning some on campaign signatures then now I'm doing trading so this is why I really love bitcoin it is really flexible also on what you can do. You just need research and patient to earn but it still worth it and you are still earning than losing any right? 
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