I know that some of them want attention, but a lot of them have other reasons like killing the game or something that we don't know, but what do they get in benefit on killing the game? Be the most hated guy in the non-existing future tf2 community that they killed? What's the purpose? They waste money to make these bots when they could just feed their family with said money, help poor people with the money they have, but no, they waste their money on bots that just annoy people, one day they will regret spending money to make these bots. Some of them even steal other's items. I just don't know why they spend their money/steal high value digital items to try and kill a 14 year old game.

Unrelated but cheaters on the other hand are less bad, most of them are chill and actually play legit sometimes, they even host Hacker vs. Hacker matches, or just have fun cheating in private servers, that doesn't mean they all are innocent, cheating is still wrong.