I am getting into this one really late, but one thing that has only been slightly mentioned is that collecting these guns (at least for me) is a passion. Not just a hobby that will pass into some other collection in a few years but a passion. I read threads on here almost every day. I check local gun and pawn shops at least weekly. I am only now coming to realize that I can't own every S&W that was ever made.
That my friends is a hard thing to give up. Or sell off.
My wife and kids are not anywhere near as passionate about my guns as I am. Never will be. Each kid has said they would like to have one of my favorite guns, but realy doesn't have a use for all of them.
Tom,
I didn't buy my guns as an investment. If my wife and kids don't get the full value for all of them at least they will get something.
I don't think I will give up on my passion. I might sell some to someone that will appreciate them as much as I do. But I will always keep the majority of my collection.
Good luck with your decision.
Wingmaster