I'm into similar situation. My son and grandson love to shoot targets with 22s but aren't into hunting. They are more into hi tech toys.
My brother has about as many guns as I do and his boy is my only nephew. I got nieces out the kazoo. I have all the family guns and those are the only ones I care about. I'm handing them out as family heirlooms to the younger in family that will keep them. The others are just guns and I will sell them off. The reason I ended up with the family guns, pocket watches and such were the elders wanted to have them kept in the family. I want to do the same. If I didn't have family to hand these down to I don't know what I would do. To others they are just a gun, like most I have. I guess I would sell them myself.