So you only don't like him due to the fact Massa didn't win last year and Hamilton did and that you are jealous of him having a pussycat doll on his arm and you think he's ugly, so nothing to do with his driving style, the way he acts or anything like that, so it wasn't really a mature response was it.
I slightly agree that he is/was overhyped and everyone did jump on the bandwagon. He did make a big impact last year and he did win the championship (just). And as you say it does become annoying when he is compared to former greats but thats the same in any sport.
As for this year he will be overshadowed by Button if he keeps up what he has started.
To answer your questions:
Becuase he was the 1st brit in ages to be on the front grid and everyone jumped on the bandwagon, he is also has darker skin which is a first (or a long time in the sport), as for the great part its probably because he showed hunger and was up with the "big boys" in his first 2 seasons (we know it was due to the car but he did have some great drives) when the rest of the brits where further back in the pack (due mainly to reliability problems)