My husband shows no affection. Should I leave him?

I'm thinking of moving out and leaving my husband with the reality of life. I'd been the bread winner for the 2 years until he got work in August last year however I still pay all the bills we go halves on the rent and he gets the shopping weekly all be it the minimum.

For the past 4 years he has lost his sex drive and I've been supportive but he also shows no affection to me.

We had our anniversary the other week; we both work shifts and had the weekend off together but we didn't do anything. I'm boring myself asking him for affection. What should I do?