Can't really say at the moment, because I am only on my second quilt, but have ideas for quilt 3 and 4.
I believe I will give some to charity and such, but frankly, what keeps me going and not having a lot of UFOs is thinking, This will be on my bed when I'm done etc. Motivation for me.
Perhaps I'll change my mind in the future, I've only been doing this since about July,(what can I say - I'm slow)