Firstly, il start with why most Cobain fans hate Courtney Love: She didnt help him through his drug problems, only made them worse and shes still a messed up druggy who looks like a whore even though she has a 14yo daughter.
After coming out of rehab, Cobain planned to break up with Love, people think Love knew about this, so she shot him.
What do you mean, what do i think of the LATE Kurt Cobain?
On Nirvanas last album, there lyrics are a lot more deeper than the others. Cobain Suffered from depression and anxiety. The reason he killed himself (and i do believe he killed himself) was because he hated the attention of the media, he said he never could never enjoy hearing a crowd chearing his name before he went on stage, but he really wished he could. If you read his suicide note, he gives reasons.
I strongly suggest you read his wikipedia page or even his biography.
http://en.wikipedia.org/wiki/Kurt_Cobain