Does one NEED multiple amps?

I saw this quote in a couple of different places, and each time it has got me thinking about its validity, so thought I'd see how many of you buy into it, either in theory, practice or both. Here it is, attributed to Terry Cain of Cain & Cain Audio:

"Start a collection of amps.

No one amp will keep a man happy long term. You need a young, firm perhaps not too articulate one you can swing from the ceiling with. And you always need a detailed and refined lower power one, the one you will never ever sell. This amp carves out the essence of tone and artistic intent, but cannot satisfy animal musical behavoir due to power limitation. With music, you cannot have too much fun. Don't let the amps get in the way. If amp -A- is complaining or not keeping up with your musical energy, just grab another and keep swinging."

Note my emphasis on the word "need" (vs 'want') as indicated in the quote. And who among you have 'just grabbed another'?