I think the people who are currently online to prove the rationality of buying Bitcoins do not need. This is a developing industry to invest in it is very profitable. And this is confirmed by the banks
I think because bitcoinfor now is cheap than it may be in near future but if you cannot afford this yet better try to get some and work hard in bounties who knows , you can be luckily get profit more than you expect but keep in mind that this is a win-win situation where in it may be possible that you will gain or nothing at all.