But it isn't his problem and it is something he is just helping with!
Sorry but this comes across as really arrogant, saying how he should think and feel. He's entitled to his own views.
I understand what you're saying in that overall the household income/outgoings is a shared responsibility.
But at the end of the day it isn't his debt, he didn't acrue it, you did.
Practically and logistically of course it would make sense to renew the 0%
Emotionally I can see why he resents it, and if you've come at it in a "I need to renew the debt so what are your details" assumed way rather than asking him what he thinks the best way forward is now the first deal has come to an end and if he agrees being very grateful and acknowledging he is doing you a massive favour.
Perhaps he would prefer to not have the debt in his name and you pay less towards the household costs. Have you ever asked him? What was the original deal when you took out the 0% loans originally, you must have known when they'd come to an end, did you ever discuss how much you'd hoped to have paid off by then and what would happen after?
I can see why he's annoyed if you're thinking of it as a done deal rather than something you are lucky to have the option to consider thanks to him.