Together 16 years. Two kids 4 & 8. When I was nursing each child my sex drive completely vanished.
Outside of that, 3-4xs a week. My DH is ready each and every day, just like when we first met.
I strongly believe that if you don't use it you lose it. the more sex you have the more sex you want. We would do it daily, but I wake up at 5AM to go to the gym every morning. Sometimes we both come home for work, get the kids busy with something and do a quickie in the shower or in the master bedroom closet

That way I can get to bed early!