Most of GPU miners didn't want ROI as soon as possible, as I explained earlier - they counted on reselling their GPUs, and they were mostly hobbyist. But I'm a miner myself, I know a lot of miners, I've seen in first person who are the customers of companies like KnC and how much they are spending, and you have to understand that this last media bubble exposed Bitcoin to a lot of new and uneducated people who run profit calculators at current difficulty (without having their miners yet), they do not even understand that difficulty is growing exponentially, and at the end of the day there is a "gold rush" in which a lot of new people is entering mining because they think they will get rich quick... So we have now a) a lot of individuals investing money they cannot afford to lose on BTC miners, and as you surely know there is a "get-rich-quick" feeling on BTC - they think they will recoup their investment FAST, and this is why they are putting in this game more money they should; b) there are more and more "professional" miners that are investing money in mining with the only intention of generating profit - they will run their operations as a business. That people has to pay for huge electricity costs, renting of industrial places where they will host their operations, etc. etc. etc. A lot of fiat expenses to cover.
During the GPU era, I rarely saw a) and b) miners, most were small-time hobbyist, running their rigs in their bedrooms. During this change to ASIC, I'm seeing a lot of both a) and b). This people needs to recoup fiat ASAP.
What a lot of rubbish. You haven't seen anything, you're just a bear and you've been jumping on bearish reasonings for ages.
In the GPU era, there was a ton of people buy dozens of graphics cards looking for ROI, just like there is now.
Price isn't driven by miners, but by traders and commodity speculation as has been amply demonstrated elsewhere.
What is of interest, though is that, despite bitstamp being easier to deal with than btc-e, btc-e is 4 dollars below bitstamp. And thats because exchanges with lower trading volumes, like btc-e are easier to manipulate. This was exactly what used to happen when MtGox went down on DDOS, there were absolutely massive collapses in prices and they successfully collected the spoils when MtGox would reopen.