Why does battle high exist?

[KageTokage]

You can be attacking things constantly and never get battle high/fever because you need to actually get the killing blow, not just an assist so by no means is it necessarily going to be benefiting the better players of a team on a consistent basis. Don't assume I only hate the mechanic because I'm slacking.

In the odd event I do get it, the healers generally don't seem to anticipate that people are going to try to burn me down so it oft ends up serving as little more then a big "Kill me" sign. You still need a good team to fully benefit from it because a team with tanks and healers failing to support their DPS and keep them alive is just going to keep losing their highs shortly after they get them, so it really doesn't work well as a comeback mechanic.

A competent team with battle highs on the other hand, feels nigh-unstoppable unless you're running a premade that knows how to coordinate LBs and properly burn them down in order to sway things back in their favor. I regularly see people in alliance chat yelling to just avoid the team with highs like the plague and focus on objectives (Which sadly enough actually worked on one occasion because they were too busy farming the other team for kills to get to the objectives before us).