Episode 69: How many times a week should couples be having sex?
With some science and even some data. Based largely on this original post from September 2015. Hope you ... find some information and solace within it.
If you want to go bigger on sample size here and use actual people instead of sex therapists, here’s a Reddit thread (with 278 comments) where people talk about their amount-of-sex-per-week relative to their age, time married, and kids. Some of the better comments are subsequently summarized on Huffington Post.