I have no strong feelings for my favorite drivers (Massa, Button - the only British driver I ever liked, don't know why - too bad he is in a Mclaren now, so I don't care as much as I did -, Webber, Kobayashi, Kovalainen, Rubens, Buemi, Liuzzi, Petrov). A good race for Massa or Weber or Buemi, or Kobayashi makes me smile and make my day.
However the drivers I dislike: Hamilton, Alonso, Vettel, well, what can I say, I can't stand them. They have no class, respect or sometimes even human decency (eg. Schumacher). How can you be a fan and admire somebody like that?
Great drivers, of course, maybe the best of the bunch, but I don't like the stupid things they do on track (bullying, dangerous or just plain stupidity), and off (interviews, Kimi has no balls, sense of entitlement, things like that). Great drivers, no question about it, but not a fan. Actually because of their fans I actually enjoy any misfortune that happens to them).
I think mostly I like drivers who feel they have something to prove, the ones who put their head down and just drive. The "adopted" ones, hailed as the best (media, fans), are just spoiled brats as far as I'm concerned. This is a recent phenomenon, I think.
Fittipaldi left everything to start his own team AT HIS PEAK. The youngest ever WDC before Alonso, he could have easilty won more titles in a top car. The guy exudes class in my book. He does his own thing, record books be damned. This is unthinkable today. Drivers act like title collectors, see Alonso, if he were more interested in building a reputation like Villeneuve (Alonso is one of the few I think could instantly adapt and drive a car with no front wings in the rain like mad), he should be AGAINST team orders to benefit him. He should be the one to disobey team orders, not the other guy.
However, he wants to collect wins, titles, etc. exactly the same reason why Hamilton lies to get a 3rd place from glock. Because of him a long time employee was fired (Ryan). How can you support a guy like that? This is no different from Schumacher parking the car in Monaco.
Of course, these are just my views, and I respect the guy who is a fan of someone just because he is the best driver.