started with a colorful childhood anecdote. mentioned parental influence once, but i don't think it was belittling. did not discuss GPA or LSAT.
despite it's common framework, I've gotten a few complements about my PS from adcomms, so I don't think it's a kiss of death if you structure it this way. in fact, of the PS's I've read, the ones that stuck with me most start out with a specific or colorful story.