So many threads I read about DH's saying they don't do enough housework or with the children.
Also women saying things like 'oh he's a great dad, I get a lie in one day a week'
I am in a same sex relationship and we don't have these 'traditional' often sexist roles whereby Mum deals with the house and baby while dad works and gets praised for helping out around the house.
These types of situations and arguments just don't exist because we don't have our gender stereotypes to fight. Although sometimes we do fight over who gets to clean the bathroom 
Sure there are times we can both be lazy but it always works out without one person feeling like they are at their wits end.
All of our friends with kids are straight couples and usually once a week we hear the women complaining about husband gallivanting off leaving her to pick up the schools runs, after school activities despite working herself.
I guess I think it's annoying to see so many stereotypical gender roles playing out in front of us when we know it's completely possible to both parent children, work and have time to ourselves.