I sold most of my Amiga and Commodore collection, however something told me back in ~2009 to make sure that I keep at least a few toys unsold, just in case I get a bug and decide to rebuild again.
It was a good strategy. The remaining expanded A1200D that I have, serves as a reminder that if I start buying stuff again, the new items will ultimately just end up boxed/packed away too, just like the A1200D now is. ;-)
Joking aside, I think I've learned to live with one usable/expanded/fun Amiga which is perfect for those nostalgic moments, when trying out the OS, playing games, fiddling with stuff, etc.