Is child support even worth it?

I got pregnant by a friend I had only known for 3 months. When I found out I was pregnant he basically told me to keep him and his family out of the baby’s life they want nothing to do with him or me. I’m a bitch, & I am nothing. It’s my fault because he told me he didn’t want a baby with me & I chose to keep him. So I said ok, you can go I can take care of him by myself. I understand it’s my fault. I’m Sorry I got pregnant. My family thinks I should put him on child support, but I want him to terminate his rights. Is it even worth the child support? I’m okay with him not being around. Honestly I really am he keeps dicking me around every time

I ask him to terminate his rights though. He scribbles on the paper he makes up excuses. Wanted to show y’all how he signs. His first name starts with an s last name m. I took this to my paralegal and she said it’s not even a signature. I’ve been asking him since September to sign his rights over when I pulled up on him yesterday and asked him he got an attitude and slammed the door on my face and argued with me, and mumbled shit under his breath. Idk how else I can ask. I’m also filing for his parents rights to be terminated as well. AZ gives grandparents rights.

Edit: He jokes around all the time about wanting to get me pregnant. He is refusing to sign his rights over. He also has two other kids. He doesn’t provide for his parents take care of them.