does sex get better with age?

Depends on the person and situation. Many marriages or couples who are together for a long time get into ruts, habits, even grow distant...but the flip side is some people learn more about pleasure, about pleasing a partner, about how men and wone differ, about their own pleasure and body. For me, I was in a long-term marriage that had difficulties (mostly her health) the last ten years, and now have learned tantra and am having the best sex of my life, slowing down, including the whole body, learning to move sexual energy and experience full-body orgasms, learning what a partner likes, communicating, not chasing a quick finish and much more!!!