No way you can have just one. Like Bruce said, sooner or later your favorite will end up in the guitar hospital (neck reset or some crack yada yada yada) do you want to end up waiting a couple of months to play again ... not me ..

I agree with Bruce. There are a few I will let play my Martin. I am less concerned about my old Alvarez but the Martin ... I usually say politely no unless it is a music brother that I trust with my life