I only got to page 1 before having to go, so after this paragraph are the replies I wrote up to that point. I really do appreciate everyone's support and advice, and the offer of PMs from Lurking. One problem I've got is that I'm a talker and need to talk things through with people, whereas she bottles it up and afaik hasn't discussed this with a soul yet.
Megatron - "How do you feel about your wife, do you love her? is it sex you want or sex with her?" I'm fond of her. I'm still very attracted to her and I'd rather have sex with her than go elsewhere. I'm not interested in going shagging, I need the intimacy more than the in-and-out.
Lurking - been married 16 years, together for 3 years before that. It was never really magical, and there were always problems. Yeah, I know. By about 10 years the sex had gone down to a dutiful couple of times a year. We spend a lot of time together as a family, probably too much really - neither of us has much of a life outside the home and work. I think she probably has had periods of depression, as I have, but the intimacy problems predate this.
Jumpingthroughhoops - we just kind of drifted along. I know, I know. I don't know how much help counselling will be but I wanted to give it a go. It's not as if she sees me as a cash cow, she's not like that.
HidingfromDD - I'm glad you're happy now. That's reassuring. Even more so that your kids are happy and understand.
Wigglewoo - it's crap, isn't it? It's not as if it's done with any malice, it's just the way it goes.
FollowingtheTao - I'm aware that I'm speaking of sex rather than making love, but what I really mean is intimacy. Sex just seems like an easier term to use. I take your point though. I also agree about sharing the responsibility.
MrsBucketXX - Setting a date just adds pressure, which is the natural enemy of passion (or so I'm led to believe)!
Better get to work. Thanks for the replies and thoughts, everyone.