DH and I have been together for 12 years and have 2DCs, aged 9 and 5.
DH has always been a bit lazy. Not with work but with anything connected with the home and the DCs. It will probably sound like very small things but they all add up and become irritating.
It's things such as if he is watching tv or playing on his phone, and the children ask him to do something or to get them something, he'll always do a half hearted job. He will either keep telling them instructions to enable them to do it themselves, even if it means they make a mess that I then have to clear up, or will do half a job in a distracted way.
If he is making a meal for them, he will do the quickest and easiest job possible. He'll never take any time to, for example, get them some fruit ready to have with their lunch, he'll just give them a few biscuits as he can't be bothered to sort anything. Or he will give them a sandwich then bugger off and sit watching tv or go to the loo for ages, so that I then have to sort the rest of the meal out. Or he'll run a bath, put them both in it and then just disappear off and leave them in the bath, expecting me to sort them afterwards (yes the 9 year old sorts herself but the 5 year old still needs help).
Quite often it will mean that I am left to pick up the slack. He'll have something that needs to be done, and will leave it and leave it and leave it, until it's the eleventh hour and so I end up doing it because he's busy/at work.
I just feel that he will do anything to avoid doing anything that is taxing in any way for him. When DS was in the buggy we'd go into town and rather than hold a bag, DH would just pile and pile things up on the buggy so that the buggy was heavy and would tip up, rather than hold anything.
Like I said, I know this all sounds really silly and minor, but it just all adds up.