So spare a moment of compassion for the next junkie you see. And spare a smile for the next parent you run into. Junkies we are—and proud of it.
Correction, Nov. 15, 2010:This article originally said that psychologist Dan Gilbert found that spending time with children makes mothers about as happy as vacuuming. Gilbert has cited that study, but it is not his own. ( Return to the corrected sentence.)