I've had almost everything regarding keyboards, speakers, synths, etc, & many other pieces of gear & have many good memories using them, learning from them, making music with them, but when their uses are done I simply sell them off and move on to the next. Hoarding is NOT in my vocabulary I'd rather sell or many times I have even given away gear to people who appreciate it knowing it's going to a new home where another fellow musician can enjoy too...
that makes me happy.