You married someone after only 2 months and after a totally lacklustre proposal. Of course it was an indicator of the future. So now what? You honestly don't have to stay forever in a marriage that started out lacklustre and just carried on the same way. Your self esteem would start to recover if you left, though maybe you need to do more individual work on your self-esteem to give you the confidence to pack this in?
it’s things like he’s never ‘given’ me a lie in at the weekends - always me getting up with the dc. He’s never looked after me if I’m ill. He’s never come to any of my family things, although I go to his.
Unless you're from a culture where men and women's lives are segregated and women look after each other in the family, most blokes do give their wives a lie in and they do look after their wives when they're ill and they do come to their wives' family events. Oh, they might not do everything all the time, but they do at least some of these things most of the time. You have terminally low expectations. You expected little and you got less. This isn't just a few dried-out patches, most of the grass on your hill is a horrible smudgy brown.
I suppose he’s a man and they aren’t the same as women
Men are not all the same as each other. Did your parents have a terrible marriage or a lacklustre marriage as well? I'm guessing your father must have been a lacklustre selfish husband, or why would you think this is normal?
The kids wouldn’t like the contact time though, it’s part of why I stay.
Would he want much contact time, being as how he's lazy and selfish? Even if he does want contact they'd still be better off living with a happier you the rest of the time.