Who plays ANY instrument and doesn't collect?

I have 4 mandolins, 3 of which are F-5 style, and I really feel no need to "rationalize" why I own them.

"...well, this one is for when I play in A, in small jams, or old-timey...THIS one is for chop chords, so I have to change in the middle..."

Limiting yourself to the "monogamy" of one guitar, or only one of any musical instrument, is in my opinion a bad thing to do. If all instruments were equal in tone, timbre and volume, then sure, no need for duplicity. My 3 F mandos? All different, all instantly recognizable by voice, all beautiful instruments.

And, paycheck willing, they will have another sibling soon.