It's interesting how people perceive things differently. I like Hamilton for instance, but when I watch him speaking in interviews he grates on me a bit with his put on American twanged accent and all this America/Hollywood persona stuff he puts on. Your British mate, from Stevenage.
Kimi is just Kimi, great on the radio, one word answers in interviews - if you think about it he is a lot weirder than Rosberg - but he is such a cemented character that we don't really think about it, his "weirdness" is what makes him funny.
Thing with Rosberg is sometimes he tries to make a joke but it fails - it's like he doesn't really grasp humour well - he made a joke in the presser the last race where he said "you two take your fight outside" but I think it's the way he delivers the line or his tone or something where you just go :| and it's not funny at all, even though he means for it to be. I don't dislike him but he wouldn't be the most fun on a night out, or maybe he is - maybe away from all the media he's a totally different character... I hear a lot of the drivers like him and he's well within their circle so who knows really, unless you know them.
And apparantly Kimi never shuts up when he's away from the cameras just thinking about what my mate told me (whos been to his house and knows his parents quite well)
And lastly....