Because bitcoin is the future.
Investing time into bitcoin right now is investing into the future. That way a little of my money today will turn into a lot of money tomorrow.

I learn and learn everyday about cryptocurrency to aim for that.
Why do you say investing in bitcoin is investing in the future?
I admit that the electronic money market is going to grow in the future, but that does not mean that bitcoin will survive until then, I believe instead there will be new coins to decide this market.