1, Elena Gilbert is the reason why Damon and Stefan are at odds.
Ehm, Damon and Stefan were at odds for 145 years, prior to meeting Elena. So, there goes that nonsense,
2, Elena always needs to be saved,
Oh, you mean that time when Stefan got abducted and tortured by the tomb vampires? Or when Damon almost burned in the season 1 finale? Or when Stefan got locked up in a vault? Or when Bonnie used so much magic she died in season 4? Or when Damon wanted to kill Caroline in the beginning of season 2? Or when Caroline was tortured by her dad in order to cure her? Or when Damon was taken by Rebekah...