Bitcoins haven't been doing too good over the past 3 months or so.
Doesn't mean I'm going to stop. These things happen, it's completely normal for a currency. In fact, one should've expected this when you put your feet in the Bitcoin water. It goes with the territory and shouldn't be something not expected to happen.
Also, for those saying you care more about now than profiting in the future, then you are defeating the definition of investing. And that is what bitcoins are about or any other currency related market. Hell, I find Bitcoins to be more in relation to stocks than currency because it's easier to explain. You don't invest in stocks and expect an instant payout unless you know something other people don't.
I plan on continuing to invest and mine even more than ever. Hell, I'm tempted to go on mtgox right now and buy $200 more worth of bitcoin because it's low. Also, winter is coming so mining is going to be popular too. I'd be mining as much as I can right now but I'm stuck in a college dorm room that is a sauna even with just my laptop yet alone my 6990 rig turned out (not mining mind you).
Bitcoin is still considered fairly new. I look at it as if its in the beta stage if anything. Hell, in my eyes, it just came out of alpha. We're not even at a stable release yet to make any concrete judgement. My two cents.
However, it still isn't an investment vehicle. There is a large difference between having faith in bitcoin as technology and faith that the price will increase indefinitely. If the economic crisis taught us anything, it's that the second is certainly not true (for anything) and if that causes you to "sell out" that's a wise choice.
How is it not an investment vehicle?
Just because a particular market crashes, ie the economic crisis, doesn't mean that the market in question was never an "investment vehicle." It proves the opposite, it IS an investment. A market that is invested in has the potential of crashing, therefore if a market crashes the market must be an invested one. Every market out there in existence is an investment vehicle as every market out there has the potential of crashing. Just because it does crash doesn't mean it no longer can be considered a market or never was which is what I think you're claiming.
Bitcoin consists of people buying, selling, or mining bitcoin. USD or any other currency consists of people buying, selling, or working for USD. Stocks consist of people buying, selling, or creating stocks. It's all in the same boat. Investment. Whether you invest in the work behind any of the 3, or buying/selling for any of the 3.