Who doesn't write their PS in a funk? You're doing it during app season, you're in a funk.
1) This is a big numero uno--I'd say 3/4 of the PS's I've read over the last two years have an opening paragraph that starts in childhood--from between ages 5-10. This pattern was so startling in the last batch I read, I wondered if I'd missed the memo to bring up my own childhood (!!).
2) Complaining about parental influence. What's this about? I mean, I feel for anyone whose parents aren't supporting their educational decisions/helping pay--that sucks--but why belittle them directly in the statement? "My parents suck, see?" seems like a weird PS strategy to me.
Parents mentioned only as inspiration. I cannot believe that anyone would think belittling their parents would in help them. If you had an extraordinarily tough childhood because of your parents, there are ways to explain this without attacking them.