You sound really serious and worried about this...
So if you go to college, I'm sure you can push yourself to do anything, even the subjects you're not interested in.
After all, it's only for your own future, right?
Also, I too, am a person that would rather make a lot of money, instead of having 'fun' at my future job.
I have only just recently decided to 'fight' my way to university and become an attorney, even though it will take me many many years to do so.
And yes, it is the ideal job for me. (ignoring my silly forum posts...)
Everyone eventually finds something they are interested in, and so will you. (Not trying to sound arrogant, there...)
It's just that I'm a nerd who doesn't go out much, so I had a lot of time to think about it.