As you all know, when a new game comes out like Kiss you may want, it often comes down to the question if you want to add another game or replace (sell or trade) a game in your collection.
I have 7 games in my collection and have sold 7 games. I got to thinking how long do people keep their games? I have a friend who keeps his games (I'm guessing) around 6 months. His benifit is that he gets to own (I'm guessing) 100 games in 10 years while myself only 14 games in 10 years.
Short term trading has it's downside namely moving pins in and out is a PITA and getting pins up to excellent shape or keeping them 100% is more difficult if you are constantly changing. But the great benifit is that you get to experience lots of different games.
Long term ownership, is nice for me, because I do less cleaning or fixing and can slowly mod over time. Also less moving and breaking my back and less driving all over creation and less horse trading. Another benifit is I can slowly learn the game and get deeper into the rules than if I was trading it out every 6-9 months. While having a game 10+ years you will grow tired of it, but if you have a large enough collection, you could easily not play a certain game for months and come back at it another time with new appreciation. Plus each game has nuances that will be more easy to master when you own a game for a long time.
The 7 that I have sold were probably on average 4-5 years of ownership, the 7 that I own currently on average I've had 3 years that's low because they are for the most part new games like STLE or IMVE or new to me (like SM had only 2 years).
If I add up my sold games with my current games I'd bet 4 years on average but since I don't plan on selling any of my current pins in the near future, I can see my average going up in the 5+ year range.