Sometimes there's a very simple answer to such questions... Because their fucking assholes. (Not the askers). They're just typical keyboard salt dispensers and never considered the saying "Id you have nothing nice to say then don't be an asswipe and keep on moving." This is why I personally would never ask a question on this site; I am only here as an advice giver. I take no pleasure in risky chances in pouring my heart out to pathetically rude shutdowns to for asking legitimate questions.
Is asker being a total fuck head? Are they being a little turd bucket? Do they only want reassurance of their own opinion, but not actual advice? Do they attack you and or are rude to you because of opposing views when they asked for your help? These can cause people to get real fucking cranky towards asker. 😉