That's the whole trouble. You can't ever find a place that's nice and peaceful, because there isn't any. You may think there is, but once you get there, when you're not looking, somebody'll sneak up and write "Fuck you" right under your nose. Try it sometime. I think, even, if I ever die, and they stick me in a cemetery, and I have a tombstone and all, it'll say "Holden Caulfield" on it, and then what year I was born and what year I died, and then right under that it'll say "Fuck you." I'm positive, in fact.
I can totally imagine Calvin saying this, sans the profanity, of course. If Watterson had let Calvin to grow up he'd be so much like Holden and catching kids in the rye field. The anger in Holden's is the empathy and Calvin's wit make them the best medicines for bad anger bouts.