15yr age gap

As I’ve gotten older I’ve been really struggling with my self esteem. My husband is great don’t get me wrong. He’s caring and a great father but what hangs me up is the porn he watches is all younger girls (18-22). It makes me feel inadequate. I’ve had two kids and I am just not the same anymore. Do guys ever outgrow liking younger women in that way? I know he wouldn’t cheat or anything I think this just comes from more of a thought of what if I’m just not enough anymore. (Note I was a very sexually abused child and I think it messes with my thoughts sometimes) edit: weve been together for 6 years and have two young children together four years apart.