DH has always insisted we pay half for everything. I've said fine, whilst I earned less, I could still afford to. I have paid in to a pension, he hasn't. I made sure I had a job with a good pension and nagged him about his (setting up a private one) for years. He avoids it and still has no pension.
AIBU to think that if he insists on having separate funds and paying half of everything whilst we are still earning, that he has no right to expect me to pay more for monthly bills when he is suddenly not earning and has a very small pension (whilst mine is pretty good!).