"I can't complain."

For me the standard "I'll tell you I'm fantastic even though I'm very much NOT" is something I could do without. Why lie right from the opening question? Set phrase or not, it seems disingenuous.

(Mind you, I still prefer it to the Japanese opening question どちらへ？, Dochira e?, "Where are you going?", which is a stock question asked even if you honestly couldn't care where the person is going.)