If you want to talk about some teammate got knock down then quit right away stuff, you should also discuss about some teammate wont revive teammate when they have the chance, they just leave the teammate to die or just want to loot first.
@LaTencyBuLLyMeit's the "having the chance" part that gets complicated.
What you see and what they see may differ. While I agree that reviving a team mate when you have a chance can mean a lot, the amount of players thinking reviving them is the very first thing you should do as soon as they go down... it is just sad.
Grabbing an armor before reviving, healing before reviving, looking around before reviving, killing the enemy before reviving. Making sure it is at least somewhat safe to revive, that is the way.
Even today when running Mirage I got almost instantly beamed because a team mate ran in alone and got knocked. I swooped in, got the revive, ulted unseen to get some chance as the enemy was still close. Then I got beamed anyway and the team mate was killed too. It's all a coin flip if it works out or not.
