LighteningB that sounds fab!
I have told him all this, many times. He always defends himself, says he tries to help and makes excuses like he was going to do X later or whatever.
I have noticed that he rarely tidies up the kids toys or washes/puts away their clothes. Unconsciously 'my' job perhaps? As a woman? I have to think for all of us and some of him and he just does a bit for him. If I say this he will say that's not fair and point out that he did a load of laundry today. As if that equals everything out.
I have tried not doing his laundry but often fall into doing it as if I don't, he will do it himself eventually. And he will hijack the washing machine for a whole day and his drying clothes will be (badly) hung on every available space. I need the washing machine for work so this is very annoying. He then also can't do anything with the kids as he is 'doing his washing'
All. Day.
If he has the kids while I work he may plan to take them out but most of the time he doesn't because he can't get them dressed and ready without it taking 3 hours plus. It feels like he doesn't try very hard, as I am able to do a load of laundry and get them out and drag them with me to the supermarket etc and stop them from fighting and get the laundry dry all before lunch and (usually) without resorting to screen time to get them to sit down and leave me alone while I do stuff. They are a handful, but they're not that bad.
Why does he do it though? Not just that but all of it? He made very little effort for my birthday last year and I was upset and told him so, so he made lots of effort this year. But it felt like he was only making an effort because he knew I'd give him hell if he didn't, not that he wanted to.
I also don't know how to tell people we've split (hypothetically) as he's so bloody nice and it would basically be 'because he doesn't pull his weight and I want him to worship me a bit now and then' 
I have no doubt he'd be a great co parent but I don't want to destroy all our lives because I'm a fed up with him being a bit crap.
But I'm not happy.
I need to discuss this with him again but he just doesn't see the problems and is always surprised if I bring up how I feel about this. I also have planned an awesome surprise birthday thing for him next week and I don't want to potentially end our relationship days before it, as that would kill the vibe somewhat.
Just wanted to know if I'm expecting too much I suppose.