Note: if you're reading this thread and trying to avoid spoilers, then don't read this.
I liked the ending. It meant that no matter what party you were rooting for you couldn't just say "HA! Told you he'd win, 'cause he's awesome." This gets rid of fangirl rioting, because neither of the main people essentially win.
EDIT: A better way of saying this would be you can't latch on to one character's victory, and just say that the creator was making it out for this character to be the right one, and the hero, because there is no right or wrong, only different viewpoints. Like even though I could say Light is the villain for killing people, I can take a viewpoint in saying what he's doing is right. This ending only further helps this point.
I was rooting for Light the entire time, and I appreciate L as a character too, but most people seemed to pick L's side and after episode 25 just act like idiots saying "L should've won, he's hotter. Light is just a meanie who cheated". Yeah, cheat, by acting the same he had the entire series. I didn't hear complaints of cheating before.
Think about L's deuctions for a second. Criminals all around the world are dying from heart attacks, so clearly it's one single guy, and after my stand in dying on TV I can safely say he has magic powers to kill with a name and face. This is conformed by people who weren't reporting in Japan not dying. However correct this deduction is, it's sitll prety stupid by everyday standards. My first idea would be some disease circulating criminals through gangs and prisons, but when my stand in dies I'd say he was previously poisoned, or since he came from a prison himself, could've been infected. But, of course if that was the truth everyone would look like an idiot for guessing murder.
I understand your hatred with the ending, but even though Near was a boring copy of L, Mello certainly changed things a bit, and they had a believable relationship. I found the last episode believable because by that point Light wouldn've gone power mad enough to be proud of himself and slip up. But yes, 90% of fans complain about this ending. In the live aciton movies, L wins, but it's so annoyingly fangirlish that I couldn't appreciate it in the movie, aswell as the movies being annoyingly inaccurate making L's deductions completely out of place. The only people who I hear from enjoying the movie seem to enjoy it purely because L wins.
I can't avoid being petty with this, but when L dies, L fangirls go nuts. When Light dies, Light fans fine with it, and it ends up a slightly less "I win because I'm awesome"-way that the fangirls would've taken it, since it was done by L's succesors rather than himself.