Jeff, I have the same problem. They don't call you OTMG for nothing. If I decided to go on a crusade to shoot them all, this would only take away my enjoyment of them. This hobby for me, is about having fun. I shoot a given gun when the mood strikes me; I don't force myself to shoot just to justify owning a particular gun. For example, I own a number of muzzleloaders, both rifles and pistols. I don't shoot them much. I would say that I don't even shoot them once a year. But, when I want to shoot a muzzleloader, there they are. I own a number of hunting rifles. I really don't do anything with them except hunt. If I don't get drawn for a tag, they sit there. If I do get drawn, I shoot them for a month or two, go on the hunt, clean them, then they are put away for another year or two. My .338 is my elk rifle. I haven't drawn an elk tag for three years and it has sat there for three years.
My guns arn't eating anything. They don't cost me money to keep and even if they did, this is what I choose to do with my money. I don't understand the obsession with having to "get rid" of a gun just because you don't shoot it all the time. For some people, it is almost like they are a plague or something that they must have away from them if they don't use them all the time. Take a look at your tool box some time. Do you own tools that you don't use all the time ? Did you ever buy a tool for one project and the need for it just has never popped up again ? Do you feel that it has to be out of your house because of that ?
I long ago learned that my interests in guns changes frequently. Right now, I am shooting primarily autoloading handguns. But, in September I will be taking an advanced carbine class at Gunsite, so my interest will change to AR15s. If I get to hunt this year, my interest will go to centerfire bolt action rifles. Then who knows what ? I work a job that isnt' 9-5 Moday - Friday. Holidays and weekends don't exist for me. If I happen to be able to make a couple IDPA or IPSC matches in a row, I become enthused with that. Then because of work, I can't make a few and I tend to get into something else. No way I would have to sell my guns only to figure out in six months I wished I had them back. I have made that mistake before and regretted it every time. I buy guns, someone else can sell.