"I just would like to ask whether I am making the right decidion by not allowing the snake to see our son anymore?"
No, you are not. Beyond the fact that your son needs SOME sort of relationship with his father, you are not legally allowed to play keep away like that.
What do your court orders say? If you violate them, you could easily wind up back in court and be required to pay for his lawyer.
It's heartbreaking to hear stories like yours where a parent has so little bond with their own children.
"obviously the boy keeps asking about his daddy"
Are you helping to facilitate phone calls? I would be in physical pain hearing this from my child.
Its a tough situation because I do think that they need to have a relationship, but you are absolutely right in wanting to keep your son from being hurt.
Do you have a visitation schedule that he isnt abiding by?