If you had bought btc at that time, you would have made EVEN more than mining at lost.
When you pay electrical cost of mining every month, you're essentially "buying" btc every month. If the cost is higher than the market value of btc, you're a sucker for paying above the market value. Ask anyone that calculated mining carefully, if they want btc, would they rather buy or mine? you will get the answer.
I think that markets needs to compensate miners more than pure speculators. Right now, mining is marginally profitable, but it will not be at ~$350 per BTC (average for industry). The situation where essential activity for the whole ecosystem is not supported will be untenable long term and will result either in severe coin scarcity or high transaction costs (eventually). Remember that mining is essential, but speculation is not.
In other words, continued difficulty rise with declining bitcoin price is detrimental to Bitcoin as a whole. The difficulty can also drop/retarget this makes bitcoin mining just profitable enough so people/companies want to keep mining.
Also miners get transaction fees, if I'm not mistaken, making mining worth while even after the last bitcoin is mined.
Bitcoin mining is a technology driver since better SHA256 and SCRYPT chips arise
In the end we will have solar driven transaction farms in the Sahara desert
(Are we going off topic here?!?)
Mining more coins does not push the price down since work has been done to get the BTC.
Analogy with gold. If we dig are asses off for gold it will not bring the price down. What will bring the price down is if we find an method to turn lead into pure gold, it can now be easily obtained by anyone and the value crashes to the price that represents the amount of work.