I think he just has a different vision for AskMe. He wants it to be a usable resource, without all the noise. I can't blame him. MetaChat is a totally different animal, thank goodness.
Besides, you know the old "give 'em an inch" adage...if he allowed the chit-chat, every thread would be filled with one-liners, and the great resource (I say that without even a trace of sarcasm, since I have a huge crush on AskMe and want to marry it) would become worthless faster than you can say "This Thread Iz Pastede On Yay!"
I like having Tapatio, chili garlic sauce, sriracha, mongolian fire oil, jalapenos, little red chiles, jabanero hot sauce, sambal, and ABC (Heinz owned Indonesian sweet hot sauce, kinda like ketchup but with chiles instead of tomatos)