You do know that this is actually really annoying to us actual healers right. Like we run over to heal and you people just won't stop walking so we need to chase you. No wonder we don't get to heal lol.
I guess I can see that. I didn't think about the fact that I'm denying ult charge to healers if I run away and self-heal. But I figure most healers have long-range healing, and somebody extracting themselves also gives Mercy an extra jump target for escape (in theory).
It's also that my biggest problem is that I die a lot. Like before Over buff's site went screwy, my death stats per character was awful - I tend to sacrifice myself a lot more than I should trying to hold points instead of pulling back and regrouping/healing. So I'm forcing myself to get better at staying alive by searching out health packs.
Also if I'm in a group and our group has a healer, I'm obviously going to tell them I need healing if it comes up and be more strategic. It's just too awkward to go for the I need healing button with randoms especially if things are kicking off. I've sat down and ate peanut butter on accident one too many times.
Depending what role you are playing it often has nothing to do with being dick to you and all about just not seeing you, especially if you don't call out for medic. If and when I play Mercy and team fight is happening or frontline is just being pushed and they are pushing back I'm very busy with people there, it's very easy to miss teams flankers or odd assault in sidelines. Even then I feel like shit every time someone drops that I maybe could have saved if I had been little faster with my GA stuff.
Still pick up those health packs every time you can, even if healer is near or even sees you. Getting that HP boost from pack makes topping you that much faster allowing healer to refocus to other targets, or even ignore you for few seconds longer while they make sure tank doesn't drop.
Edit: Also what Antiwhippy said. Running away from us or not knowing where we are (usually where team tanks are) is often on you at the end. GA can maybe reach you, but then you pull me far away from others.
When I'm playing Tracer or Reaper or even Winston I feel like it's on me to heal myself or return to the healer, I don't expect them to follow me around. It's when I'm standing on the point as Reinhardt with low HP and the Zenyatta isn't moving his orb from a fully healed McCree next to me that I'm like "well, if you don't feel like healing me, I guess I need to go find a health pack, peace guys."