I don't like judging people's parenting, but there are some people that have NO REASON being a parent.
My friend (Sam) is being nice enough to let her brother and his girlfriend (Jen) stay at her house. She has a 10mo old and Jen has a 4mo old. The 4mo old is either in her swing or carseat, and EVERY time she cries, Jen just pops a bottle in her mouth and leaves it there. She'll eat almost 16oz each time, then she won't even change her when her diaper is wet, so it leaks all over her clothes and carseat, and of course those never get clean. She was there for 2 weeks and that baby never ONCE got a bath. Sam offered a million times to get the baby bath out, but Jen refused saying 'oh, she'll be fine'. GRR. Plus, Jen gets food stamps, WIC, AND cash assistance, but eats all of Sam's food AND uses SAM'S baby formula AND cereal. She puts it in her bottle so she sleeps better at night.
I know there's worse, but I just can't stand when people NEVER hold their baby, not even to feed them. How can someone even do that? I don't understand some people.