While it's a very nice sentiment, I don't think that the literal clear out of the gear and the implied clear out of the mind is the golden ticket for everyone. It is however very easy to go too far in the other direction and have too much choice available.
When you have to lay camera gear out on the bed and go through a long and drawn out selection process of what to take when you leave the house, THAT is when you have too many cameras (been there).
When you get back to the house carrying a bunch of gear that went unused, THAT is when you have too many cameras (done that).
If it's easy to choose what gear to take and when, and when every or almost every piece of gear comes back a little bit more worn out than when it left, THAT is when you are in sync with your gear (getting there).
If the choice of what gear not to take with you is the same every time, THAT is when you are a hoarder (meekly raises hand).
Bottom line: I don't feel that being a camera polygamist is a creative barrier in the field. The guilt is looking at the gear that nearly always gets left behind. THAT is what I'm trying to work on at the moment.