Who says it is not profitable? In most cases the rigs running today are paid for. So every BTC earned is additional profit. When ASIC's hit, then the GPU or FPGA Rigs might not be profitable unless they get free energy.
Well if someone has hard to sell stuff, then it's profitable, but people should always think about economic opportunity costs. For example I have a 600mhas rig that I can sell easily for 200€. To mine that 200€ at current difficulty if nothing breaks down would take around 8 months, and if something breaks it's one month for a gpu fan, three months for a psu etc.. And most people have to pay for electricity, so the margin is even worse. Basically
I think that people are ruining their hardware for less than nothing.
The other concept to keep in mind is that the your mining rig is generating BTC not USD or EUR or the such. So, if you mine, in hopes that the BTC will go up, then you could cash out in the future at much higher exchange rates.
You can always buy coins and support economy that way.. I was expecting difficulty to drop in few weeks around 20-30%, so that this would be profitable for even some of us.
You are correct. In most cases, miners make "profit" because the have not added together all the actual costs and risks involved (dead GPU, time spent fine tuning it etc.)
What's even stranger is that most miners refuse to understand that mining is actually buying the coin while paying to power Co and hardware manufacturers and so on. At some price/difficulty level this was profitable but now it looks less and less attractive. If someone call 10 EUR a month as profit, they are better off collecting cans
and probably make way more.
Lets say you bought a fancy GPU(s) 6 monts ago and spent X. What if you took that X and bought BTC? Not only are you liquid this whole time but your risks are also way lower.
Adding those imaginary ASIC's and FPGAs to the picture and you realize that small-time mining is doomed
Good news is that GPU's are perfect for LTC and looks like some have switched over to litecoin
Regardless, mining is just like building and maintaining the infrastructure - "building the roads". Now we need the vehicles, so the roads can serve it's real purpose. What I mean by that is we need more useful services. If you subscribe to the ideas of modern economical models you realize that everything revolves around spending and not hoarding. BTC economy is not different. Miner do not give value to the BTC - services and goods do.
Cheers!