Especially on the internet. In other words, there's no point in arguing over opinions but people do it anyways.
Anything music related, you will be bitched about if you generally state something that you like, and how everyone will slap your shit just to say "that's your opinion". You can't even joke around with close friends anymore without saying "lol your music taste is shit". Another good example are the "top 20 <insert genre here> songs". The uploaders blast through shitstorms all the time because other people "don't agree".
What's that, you think John Lennon's Imagine is the greatest song in the world? LOL YOU FAG THAT'S YOUR OPINION.