There is barely any benefit aside from you guys being lazy forgets.
All your hotlinked images get broken. People get confused.
When you link to the actual page, people are being led to an ad-filled page just to look at an image just because they wanted to know what it was.
Just use one of the other hundreds of free uploaders that don't pull this crap please. Sure, you have to actually put in 5 extra seconds of effort, but it makes it more pleasing for the viewers.