It's just part of a long list of things we don't agree on. I'm the sensible (boring!) practical one and he's the immature doesn't think things through one. He seems reluctant to spend any money on the house but will happily spend it on himself. We both work full time and I don't have a problem with him treating himself but whenever I suggest buying things for the house it always ends in an argument. We've lived together for 8 years and I'm fed up of this always being an issue. The carbon monoxide detector has just pushed be over the edge! I'll end up getting one myself (and fitting it, that's another thing, he doesn't do diy) but I feel so resentful 😐