I started smoking seriously at age 16, sigs, cigars, pipe, but never did illegal drugs.
I still have a set of expensive pipes (including meerschaum) that I don’t know what to do with.
Well if you (ever) are tempted to use then, then in my humble opinion sell every one.
If however you’re not troubled that way, I’d keep them (locked away) as a momento. Just one our two out at a time to look at. For real, they were a significant part of your life’s experience.
Keep on enjoying that part.