I really see your point and I agree that playing the game should be done for fun, and if you don't have fun then you should do something else that is fun.
Now, I believe we can both agree that lots of people quit the game not because of the game, but because of the community being hostile.
You mention yourself that it sucks and I think you can also imagine that the bad things surrounding the game for a lot of people ended up outweighing the fun of playing the game itself.
Not to forget about new people who come here and get treated to a great game with at times a very questionable community.
We can't change someone else but we can change ourselves. If enough of us do that then perhaps more will follow.
And even if it fails again, what do you have to lose in being kind to another person?