Perhaps you need to liven up the bin collection discussions. Its a bit like we all have to do, with alot of things after a few years together.
I am sure Mrs SD held onto your every word, about the bins with delight when you were first married.
Though it would have been less complex then as we didn't have so many types of bin collections.
I'm sure you can get her interested again if you find some interesting analogies for discussing bin days.
Perhaps you could liken it to her trips to the hairdressers or shopping