If you really want to succeed in life academically then it always helps to have qualifications under your belt. You will always have the added bonus and bragging rights on your C.V (Curriculum Vitae) when applying for employment, that little something extra over the other 300 people with the same qualifications, applying for the same job, your job
There's also the fact that life will never go the way you plan it. You may find in the future that the line you are following in your career does not end up, practically, being what you expected, does not prove to be financially viable, new aspirations will emerge and you may get bored of it, circumstances and your outlook on life may... will change
Basically what I am saying is that it will, in the long run, give you something to fall back on to. I study things myself even now, 4 years out of education that I had no interest in whatsoever at the time.
Read Stephen Hawkins Brief History Of Time