Personally I still think Bitcoin is overvalued compared to the other altcoins that are out there.
You also have to go into this with a backup plan if all things fail. Simple dumping hundreds or even thousands of dollars into such a speculative and volatile environment is asking for it. Myself? I dipped in with gaming hardware, the only "money" I have invested solely into this crypto-currency stuff has been electricity. If things fall apart? I still have graphics cards that are in high demand by gamers...those having ASIC miners? Good luck...the value can continue to skyrocket or crash completely.
I am not ready to invest thousands of dollars into the technology on its own. TBH if I was unable to mine with graphics cards I probably wouldn't be mining at all. For what its worth, even with it tanking the way it has...my current crop of coins is worth about $2,500. Not bad after a short time in the game, if I cash it all out now most of my gaming hardware is bought off and still have the hardware to flip out if I choose to