I watch it cos I love it. Simple as that really.
My favourite doesn't always win, the exceptions there being Craig, Brian, Kate, Nadia but that doens't stop my enjoyment.
What I love about BB is that we build these people up, go nuts about pretty trivial things then can't wait to see the back of pretty much everyone in there! What a show haha.
I doubt that Charlie will win (my flabber will be gasted if he does) but the fact that he'll be in there for the duration only to fall at the last hurdle should be good enough if you dislike him that much.
It's not like he's hogging the highlights show or anything. In fact he doesn't get that much air time compared to the likes of Freddie, Bea, Marcus, Lisa and David. The rest of the house are given marginal air time in comparison.