When you live under a pretty strict one in/out regime, you can't really have the "keeper" mentality come into it. I only have six guitars, but of those three are essentially worthless (two of those have tremendous sentimental value, one is a beater electric that I have modified and continue tinkering with) and one is a valuable heirloom electric that I never play. That leaves me with my two "playing" acoustic instruments. I love them both, but I could see selling them if I knew it was going to net me something "better." And there's always something better.