I tend to use Rescue sparingly. I agree with NekoMataMata's general point that I'm deciding for someone else when I use it. I try to give my party mates the benefit of the doubt that they have a plan. Unless it's something I know is insta-death and they won't make it to the safe area in time. Or they have been missing mechanics and I'm not confident they won't continue to miss them. But I'm generally pretty chill even if they get a vuln here and there so long as it's not putting undue strain on my ability to maintain support for the entire party.

As Packetdancer mentioned, Rescue can be janky sometimes. I really don't like the drag animation. I would be a lot happier if it was an instant warp. Because I have accidentally killed people with server lag and yanking them through the bad. I apologized and most were pretty cool about it. So I'm not afraid of using Rescue. I just don't find a lot of instances where I feel it needs to be used. I wouldn't cry if they got rid of it, since it can be used for some rather obnoxious purposes. If they did, then I'd be happy to get a gap closer instead.