Personally, I think most of the beefs are made to get attention, making it a publicity stunt - this is very common in the hiphop scene where some artist have told how certain artists have approached them to make "fake beefs".
Other than that we really live in a hateful world, just look at that Perez clown.
He write hateful things to get attention and people buy into it - heck even artists buy into it.
I will never forget how he absolutely ripped Britney and wrote some of the most hateful things I've ever seen anyone write - then what does Britney's management do?
They take him on board Britney's tour to shut him up - WTF?!
Also many artist comes into the scene at a young age without learning about manners and respect - everything is internet based now days and if you have a big buzz no matter why you have that buzz, then you will generate money.
I think the fast media with blogs e.t.c makes us also more aware of all of those that really have issues with each other - What I mean with fast media is like TMZ, who probably knew about Michael's death before all his relatives knew.
Today's artists are whimps, like little bi***es who go like "boho he said this about me, he did this" - it's pretty pathetic if you ask me.
It's hard to respect artists like that.
Many in the industry took a shit on Michael while he was alive - still he didn't give them any attention, because he's better than that.