Well, I think so many people are investing their money in bitcoin because they see the potential that made their fortune in bitcoin. I myself as well as them. by investing with bitcoin, so many business opportunities are open, such as trade, investment, HYIPs, Minning, and much more. This is very good for a student for not spending time, and is also very good for people who do not get work or unemployment
There is really a big potential to bitcoin and it gives equal opportunity to anyone. The reason being is that anyone can get some satoshi through faucets. If you don't have any money to buy bitcoin, you can join to online gambling sites that offer free faucet that you can actually grow to even 1 btc or more if you're lucky enough.
I see lots of college students have a huge amount of bitcoin in their assets and they get it from online faucets and growing them through playing online gambling sites that use bitcoin as their bet and mode of payout.
Some people offers their bitcoin for loan and earn nice interest rate.
The opportunity is very wide for everybody. But you should always stay away fro HYIP and scammers that lurking around for targets like you. Just be very vigilant.