My husband is a surfer and loves the outdoors. Before we got married he would do week long surf trips in Mexico regularly. I thought getting him into the backcountry with me would be a slam dunk. When we got engaged we even registered at REI for our wedding! Well, he went on exactly one trip, for one night with me. I think he figured that fulfilled his lifetime backpacking obligation contract to me :). We still call this the "big bait and switch."
He still surfs and loves the outdoors (as long as there is an ocean in spitting distance), but could not care less about backpacking and happily sends me off on trips with my friends. Happily except he REALLY hates my gear obsession. He regularly curses my eleventy boxes of camping and backpacking "crap" that is filling up "his" garage. He rolls his eyes every time my scale comes out, or I'm caught updating "the spreadsheet." and cannot fathom why one would need more than one sleeping bag or stove. "Because, this one is for summer trips, and that one..." "Nevermind, I realize I don't care..." I admit it, sometimes I have found myself sneaking gear into the house rather than listen to the snarking....
But it's all good--someone needs to stay home and watch the kids!