Is it a common practice to do all the work for PhD supervisor?
Assuming all that you state of your supervisor is true, i.e.,


Claiming primary authorship of all of your work
Making you write grants and claiming it as his own
Refusing to start your PhD programme


Then you met up with one of the classic cases of an abusive supervisor. If that is the case, then continue no further as his student. Spare no time in moving away as you won't make much progress (at all) with such an advisor. 

I feel sorry for the situation that has caused you to despise the PhD degree itself. My honest advice would be to change your advisor, not your path. If the current advisor claims primary authorship over your writings and grant proposals, then it is only a proof that you are really a worthy candidate for a PhD! Quit your supervisor, not your PhD!

Think deep and make your decision wisely, as it is yours to make.