Actually I don't want to argue or anything because it's way too much trouble for my introverted ass, but Tajikara-san mentioned about this stuff in Chapter 7 (page 152-153 in the manga volume pages) about his circumstances, so it's quite reasonable for him to act this way.
People are different, plus even if they're human like you, doesn't mean your "normal" will also apply to their "normal". Culture, region, family, environment, etc can influence childhood development that will create its unique adults, or maybe certain stereotypical adults of certain background. Like Americans for being open and free-minded, or Japanese for being polite and reserved, etc.
Well, everyone are free to have opinions, I'm just...kinda sad because not everyone is understanding like Ookami-san
... though also because I'm one of those "misunderstood" guys. ; w ;