I may be alone on this one, but I have more fun when I am winning. Of course, I don't mind losing honorably; however, there is no honor or fun or joy in losing with a score like 10 v 52. After losing game after game due to nonsense, you get exhausted with people not giving a fuck. Just yesterday, I asked a teammate (the adc) to stop wandering alone because they kept dying. Of course, this led to the whole "it's just normals" excuse and the "fuck you's" came along as well.
Honestly, to me, it sounds like you're justifying idiotic behavior. I would expect it from someone who just started playing, but I get matched with people who have won 200+ games. By now, they know better.
Also, I'm not the kind of person who flips out when my team is losing. I don't tell people to kill themselves or anything like that. I get annoyed, but I don't talk shit.