The sad face is when couple with children spilt if they are constantly fighting and access is being denied (rightly or wrongly) by mum and dad goes without the kids for long periods of time he will get used to this and to some degree start to be ok with the free time / extra money / less drama / more time with new partner
Is it great no but it is just life.
My DH had his kids dropped off to him every morning and he gave them breakfast and took them to school then he collected them and have them tea back home to mum for 6 every min- Friday, he worked nights.
When we met after about 4 months mum didn't want me around the kids etc so started to stop the morning and she changed her hours and took them to school, my DH never got a say. But you know what he soon started to enjoy going straight to bed when he finished work at 7am.
Then we moved into a house together after 1..5 years and we said we are happy to still have the kids after school for tea each night but could she collect them on her way home from work instead of him dropping off every night ( we didn't move far about 15 mins drive )
It was a no. Hard no. And she got pissed said she was going to make other arrangements after school so it all stopped. Again he had no say and suddenly he went from every day to just Thursday for tea only and EOW.
It was shit BUT again he began to adjust and enjoy being free for other things
About 6 months after she said he was going to have to have them mon-Friday again for tea due to her Family childcare failing through ( they got pregnant themselves ) she offered to pick up one night.
He said no we would have them three nights out of give for tea but she was to collect twice. She refused. So it stayed the same.
Is he the bad guy no. She assumed she held all the cards and power them actually snot herself in the foot when he didn't run right back to a crazy schedule that he had actually began to enjoy not having to do. Of course he misses the kids but he was always in contact