simpler, cheaper, healthier alternate solution: have no cats
We don't need someone coming in to reel off facts in a jerkish fashion. Facts aren't that hard to find.
shame on anyone that contributed to that. you're part of why HN has such a hateful, obnoxious sub-culture that drives more mature people away
People don't pick their hobbies purely based on cost. Suggesting "quit your hobby" / "pick a cheaper hobby" as a solution for any problem other than "I literally can't afford to pay my rent any more" makes you seem like a pretentious asshole, and even then, the way you phrased it was just plain rude.
Why not?