+1 : my grad school experience was not like this. I'm sorry you went through this. For me grad school was the best time ever. Pursuing science while being protected and guided by a world expert, and doing so without grown-up responsibilities like getting grants, doing admin, etc. It was so. much. fun.

I think postdoc is even better. Bit better pay and academic freedom. You are still somewhat shielded from responsibilities, but you can take that jump if you want to take the initiative.

But no thesis hanging over your head :)