The reasons a lot of people complain about are the same reasons I like slack. First, if i'm intensely busy, I just ignore it. It stays backgrounded, and a little blue or red dot sits there. That's it. When i'm in a general workday, i'll usually try to check red dots, and relegate the others to 'as time allows.' But that's its draw to me. I love seeing the goofy gifs, custom emojis, etc that people come up with. It's a sort of comic relief from the stressful days. In the end, it sounds like a lot of folks just have trouble with self control, so blame a tool. You don't have to click the red/blue dot...just let it be.