Hello,
As you may be able to tell from my picture, i'm a combat medic, and sadly I find the current medical system on EU1 and EU2 to be mediocre at best. What I mean by this is that there is no real incentive to stay on the death screen and wait for a medic to revive you. Because of thought process "Awww shucks I died, welp, i'lll hop on the next helo out instead of wait for a medic!" this frustrates me when a squad mate dies next to me and in the middle of reviving him he disapp
I feel your pain, I used to be primarily a medic, though my gripe came from the change/nerf to the revive system where a lot more instakills happened.
You'll find there are a lot of people who don't know they even can be rievived and automatically hit respawn. Others see no medic is close by and respawn, some will see a medic 300m away and then see that distance meter not move at all, or start counting upwards and realise they are not getting revived, which can make them jaded.