Counseling or therapy may help you.
It is difficult to be intimate in a relationship when it wasn't something we saw or learned growing up.
If you can change your outlook on things, you may find more enjoyment than you do now.
I didn't get married until I was 46. No children. In fact my 3 other siblings, only one other got married (twice) and we are all childless.
There was no drive to have children after growing up with family dysfunction, alcoholism and abuse. I can say that have never really felt sexually close to anyone. I really felt that other people let me down and the only one who could stick up for me was me. I was convinced of this at an early age when I ran away from home.
Mom seemed to think that it was OK to 'skip a generation'. I was a little upset to hear her say that as she still didn't get why it skipped a generation.
My marriage never really took off or is very rewarding. I'm 59 now. We just stay in it because I can't afford to dissolve it.
It is sometimes like living separate lives. We do some things together and have some friends in common, but i don't feel any magic in it.
I have my hobbies, my work and my cat.
My sister who I wasn't close to growing up seems to mean more to me lately as we both care for what is left of the family.
Best of luck to you.