I think a lot of people are just extraordinarily passionate about what they do. and for good reason! it rules for them! not dissimilar to the FIRE people, or credit card point people, or MLM people, or investing people, or any other people. I think what rubs people the wrong way is when people get insistent and passionate about it to the point they degrade anyone who doesn't do what they do. I certainly do this to people on things I'm passionate about too, and try to be mindful that it probably isn't a good idea to get going too much. look at the credit card thread for example. i still travel to exorbitantly expensive places all the time and fly my tiny little baby kids in first class on the way there by leveraging that stuff. but I don't get too worked up to others about it unless they share the passion for it, because that's annoying AF.