When something becomes so great, it's crushed by its own popularity. Usually ruined by angry pre-pubesent little boys and "independent" scene girls on tumblr
Gangnam Style used to be so cool and fun, but it was ruined by the internet. It became so overused to the point everyone just got sick of it.
I used to like playing Minecraft, until the angry pre-pubescent little boys started playing it. It was ruined by the internet!
Doctor Who is doomed to be ruined by the internet, mainly due to the girls on Tumblr