when people act really offended because I pour the milk before the cereal

Anytime someone finds out that I pour the milk before the cereal they always act really offended like I’m committing a terrible sin. They’ll say that it’s “disgusting” or “wrong” or something like that. It gets so tiring. Just let me live my life in peace as I do for those that pour the cereal first. I get that it’s meant jokingly most of the time but it’s just not funny. I don’t believe that there’s a right or wrong way to eat cereal, I just personally like pouring the milk first better. Even if there was a right way, how is my way so wrong that you have to go out of your way to annoy me about it? I wish people would be more respectful of other people’s preferences.