Why are some people so weird about vegetarianism/veganism?

Anonymous
Recently I made the decision to go vegan. I've only told those close to me but when I did majority of them acted really weird about it? Like they just blankly stare at me or are really arrogant or tell me how hard it's going to be (it's really not that hard). I think a lot of people in society have this view, but I can't understand why? How could anyone have something against another persons dietry choices? I understand that a lot of vegans are really full on and judgmental towards people who eat meat, but my family and friends know me better than that so it must be something more?
Why are some people so weird about vegetarianism/veganism?
10 Opinion