Fun story, you actually have no choice whether or not you get SS benefits. My best friend knocked up a junkie online. They had a kid and he ended up taking 100% custody since she's a drug using loser. She recently got SS benefits since our government decided that being a drug user (or "depressed") is a disability.
Since the mother gets SS benefits, even though she has 0% custody, her children get SS benefits. My friend, who is very rich via family, called our government and said he doesn't need their $1,000 a month. They told him "you could be Bill Gates and you're still getting this money".