Where you continue to comment and engage commenters even though you know it just ends in hair-pulling frustration for you, almost every time. Mine is fitness articles. I actually love the Vitals blog, and the authors who write there. Many of the commenters are good. But invariably anywhere fitness discussion is happening, there are a bunch of douche bros who think they know better than everyone else how to fitness. Between this conversation where the guy eventually tells me he’d “love to teach me a few things”, this guy, who comes in to spout the dangerous nonsense that “cardio doesn’t do anything” even though heart disease is the number one killer of women in the US, and this guy, who comes in to let everyone know that women who lift will look like fitness models (thanks, YogaNerd MD, for taking on that one), what should have been a good article about women lifting weights just devolved into a bunch of mansplaining assholes swinging their dicks around. And yet I can’t help myself. I should just stick to commenting on io9 and GT, where generally people are cool. But I can’t quit you, Vitals.

What is your topic where you engage even though you know you’re going to end up regretting it?