And tbh, he comes over arrogant to me. Don't know why but there is something in me that says:"I don't like him!"

What? Hatice, you know I totally respect your opinion and often agree with you on a lot of things, but you are totally wrong here. I've been following this kid for
years, and let me tell you that he's the most humble kid out there. You have to remember that these interviews published by the English press don't exactly make players look good. It's not Benzema saying, "I want to go here and here." It's people asking him, and him answering honestly. But what he ALWAYS says is that he has a long way to go and a lot to prove, and that while it's nice that people are saying nice things about him, his job is to prove things worthy on the pitch. He's still living with his parents and his eight brothers, and until last year, his dad drove him to practice. He doesn't want to get his own place because he thinks it's important he stays with his family and keeps things real.
Also, for those outside of France, Benzema seems like a one season wonder, but he's not. He's been an upcoming talent for many years now, and last season could have been his break out season, but he picked up a hamstring injury and missed five months out of action. He's been scoring professionally since he was 17.
I agree that he's being hyped a lot right now, but again, it's not just Benzema here. It's the sport right now. Four years ago, you could say the same of Rooney, but I think now few people will say that those concerns were warranted back then. And Benzema is just as special. You don't have every major club in the world after you, don't have managers like SAF following you around in the tunnels and Wenger calling you the future of the France NT, don't have Ancellotti mention you in the same breath as Drogba, Sheva, and Adebayor, and don't have Brazilian Ronaldo point you out as a successor, unless you have something there.
Given the market's high prices on very talented young player (I posted about this in the transfer thread), Benzema's price is justified.