I found myself in the same boat at 45. But I had a 14 year old daughter.... not the time for this situation as I like/need to listen to everything she listened to.I ended up taking her to concerts and enjoyed that aspect again.
I also looked back at the music I enjoyed the most. Determined the type and aspect I liked the best. (blues and slide guitar) Started on a path of learning about these both as a listener and a player I think I am more excited about music now than ever.
This has lead me down many paths of discovery of old and new artists. The most interesting so far is a guy named Chris Whitley.
Keep your mind open
Casey