Honestly I'm so sick of hearing this

I'm so sick of people saying "well you can't complain about your child's deadbeat dad when your the one who made a baby with the piece of crap." Do people not realize that lots of people change after they have children. Me and my ex were together for a few years before I got pregnant with my son and right after we found out I was pregnant he turned into the BIGGEST piece of crap. He had been great up until I found out we were having a kid, now our child is almost two and he's rarely ever here. Most women don't even find out how shitty the guy is until it's too late!