I'm a hoarder and I rarely ever sell. If you were to combine all three of my accounts you would get close to 6000 items (this is including housing items ect ect)

The only time I sell items is generally commons I got from the daily chance. Other than that I keep most things unless I desperately need gold.

I never fear that I won't use an item. If I see one that I haven't used in a long time I will go out of my way to make an outfit with it. Case in point with this outfit was the wings, I hadn't used them for months and finally decided I was going to try to do something with them.