My wife gets on me to get rid of stuff - she has a "one year" rule for the most part. However, typically clothing related. We just did it last month. That being said, it's pretty relaxed. We're both in uniform, so our civilian clothing gets worn for like 4 hours a day and on weekends. As you can guess, we don't get to a lot of our wardrobe.

As for camping gear, I tend to hold that like it's an investment. Yeah, i don't camp as much as I want, but that'll change someday. I'd hate to have to drop $1000 again for decent gear. I've sold off some flashlights (anyone want one? PM me for what I have) and knives (ditto!) when I have lots of htem, but I keep some core items.