David Gerard said:
Because that isn't really what it's for, per the decorative policy. It's there to keep out the *irredeemable* crap that makes it past speedy. (And I'm painfully aware that new articles can at times run up to thirtyish percent shoot-on-sight speedyable. Anyone doubting this should do Special:Newpages patrol; if it doesn't turn you into a bloodthirsty axewielding deletionist, it'll certainly give you a strong understanding of them.)
Doing newpages patrol is the nearest thing a childless person can get to being the parent of teenagers.