Would it really be so bad if I just stop paying my parent plus loan
What has pushed you to such a point?
I just want to change my life and move on
Though you may regret the loan now, you should pay it back regardless. If not the loan may default and the consequences of that can be worse than the loan payment.
I'm going to stop paying for my student loans. I will never pay for something that I don't need.
I'd really advise against that. Defaulting on student loans can cause significant financial difficulties including garnishments. Instead call the loan servicer and see if they can help lower your payments.