Sometimes I find it helpful (for me) to not look at how one person's in a hundred behavior will affect things, but how would it be if everyone were behaving that way. If everybody were calling family and friends from summits; if everybody brought a boombox; if everybody brought their perfectly-behaved dog, etc.
I try to enjoy the outdoors and realize I am not alone there, even when in those rare moments when I can't see or hear anyone else. I try to minimize my impact on other people's experience just as I hope they are trying to do the same for me. I realize that allowances have to be made, but I try not to automatically think that those alowances must be made for me.
As trails and summits get more crowded, this gets to be a bigger problem and I need to be even more sensitive to my impact on others, especially if I want the same consideration.
So I guess, Jim W, that's "how the F" (charmed, I'm sure!) it could be a problem for anybody.