Hobbies go in cycles. I think you are right collectibles go in cycles some guns will be collectible and timeless but most are tied to eras of culture. Personally I have no interest in guns that are not easy to shoot for me and easy to maintain. I own one polymer handgun but it is my favorite carry and self defense gun. I like revolvers and frankly I like the prelock MIM revolvers best because that is the era I came of age. I think most old accumulators are going to be giving your guns away I have already seen one 90 year old gun hoarder sell it getting little except for a few items.