I'm not going to let my parents stay at my place
Why would you not give your parents a place to go?
I don't want them stealing my things.
It's perfectly normal to want to protect yourself and your home from potential harm. If you feel uncomfortable having your parents stay with you, it's probably smart to follow your gut feeling.
Are you disagreeing with me? I don't even care if they die.
I was agreeing with you, but I do think that you are a little harsh. If you do not feel comfortable having your parents live with you, then I see nothing wrong with that.