You can live how you want to live...What I don't understand is why he doesn't even buy his own fags..I understand work is variable when on zero hours contract...Why doesn't he on a good week buy his own fags, save so he can get a pack when he wants one..
If is was a woman planning a baby , I would not see a reason why she couldn't contribute until she as unable to work ( bearing in mind she is carrying the baby so a point when she is unable to work)
This thread reminded me of Katie Price who said everytime she meets someone they have so much money , they don't need to work and it makes her difficult to meet someone on equal terms.
The difference between the examples you gave were both wanted to do something different. I don't believe the man has to be the higher earner however he should be working regular hours. If by saying he is on a zero hours contract he is rarely getting work he is technically unemployed and needs to be looking for a job..
As has been said upthread it isn't about a 50/50 split however yes he should contribute on the weeks he works or at least support himself.
I wish you luck .. like others I don't think you want to hear any of this.. I can say I can remember a thread on here and really resenting the responses and looking back about 2 years later I can see exactly what people were saying.. I think you will feel the same at some point in the future. I do think MN can be very quick to quit the relationship but I would think at the moment you would be better off if he returned to his mum to support.
You are enabling him ..You can support him if you want the most worrying comment you have made is you buy his fags because of his mood if you don't...That is his problem to manage.