Very similar experience to mine - prior to relationship and marriage I hobbied because I didn't want to date and it was just easier, when we started dating the sex was fun but vanilla (not that I'm a freak, but the same routine of mish, doggy no oral either way etc. gets boring) after marriage it stopped for years, so I hobbied, but we still had fun, traveled etc. then she decided it was time for kids so we had just enough sex to get 2 then it stopped again for years, so I hobbied, now it's like maybe 3-4 times a year, not enough for me, so I hobby, infrequently i.e. only when I need it and it's not coming at home.