Well, this is embarassing but honest...
I don't think I'm the norm, but we haven't had relations in such a long time. It'll be 2 years in June. DH and I are having a hard time adjusting to two kids, I guess. We are both tired, and I think I had undiagnosed ppd. Also, I was nursing for what felt like all day up until DS was about 12 months old. Now he's only nursing 2 times a day, and my drive is coming back. It's been so long that I can't even remember the last time DH made any kind of advance. We haven't been seeing eye-to eye on lots of things lately, so it will probably be a while longer.
We went for a long time after DD was born also, so I'm sure we'll do it again someday. Honestly, it's not much of a priority for me right now, but I do worry about it from time to time.