Yes... but they have a weird disconnect between their hard earned cash and the need to hand it over to feed/clothe/house their kids.
DH has a friend who loves his kids, sees them every week, doesn't spoil them or play 'Disney Dad'. He is, on the face of it, a perfect example of how to show your kids that you love them even if your relationship with their mum has failed.
But we know, because he has told DH, that he has not and will not pay 'that bitch a single penny'. Why? He hates her so much that he does not want to see her benefit from his hard work, a single penny in her hand would be fatal poison to him. So he buys clothes, pays for school trips and all 'not house' expenses but won't pay a penny to his ex wife.
His back story is: they both worked full time, joint fiances, joint mortgage, he had a 'not affair', she threw him out, she is a total man hating bitch who stole his house, life and kids. He has to beg to see them, she is a total cow, he is joining 'that dad's group' to get help.
Her back story is: they both worked full time, joint mortgage, 2 kids, but he kept much of his wages back as 'he deserved a life'. That life included a few EAs and one probable full on affair. She found out, had enough and threw him out. Court gave him 50:50, she bought him out of the house. He sees the kids most days but doesn't have them to sleep over more than 2 nights a week but, because of the 50: 50, won't pay her a penny, ever!
But he does love his kids, they love him. It is only because she has a good job that she can keep the roof over their heads.
Yes, she is taking him back to court, which is why he spoke to DH about it. I know her as I used to work with her.