I don't really like the idea.

If someone asks to have a go, a refusal often offends.

They would NEVER put them back without damaging them.

They would remind you of how you should be practising.

Burglars would be attracted by tales of a yamaha stradivarius collection.

Next time you wanted to buy another guitar, your wife would say whats wrong with all these?

The ones that don't get played very much would feel hurt and rejected.

You would forget where you put all the cases.

Every time you get one down, someone would say, I can see its a while since you decorated in here.

Take my word, it could affect many aspects of your life adversely - its what in modern parlance we call a crap idea.