I'm usually not worries about MP, but there have been a lot of circumstances where I have gone OOM. Most of them are in bad groups where people are wiping and I'm wasting MP on 2-5 Resurrections, or the other healer is dead and I'm trying to keep the tank and the party alive through heavy damage, or both lol.

In Titan, I'm scared to use my Aetherflow stacks on anything other than Lustrate. People will always get hit a few times by something and need a quick pop, but for the most part its the Mountain Buster, or what ever it's called. When I did Titan we had a Warrior tank, and he announced on Vent when he was about to use Buster. When he announced it was incoming I noticed there was intense damage where I essentially had to spam Embrace and Physick as fast as I could to ensure he was at full health before it hit, and try to Adlo before the hit too, and save Lustrate for when it DOES hit, to get him up from the 1000 or so health it leaves him with. I'm not the most experienced in that fight, but sometimes it seems like he only does Buster once, sometimes two or more times in the span of a a minute or two it feels like. I've been in the situation where I was running low-ish on MP from curing Tummults, had just used my Aetherflow stacks healing up from a Buster then popped Aether's CD, used it on someone hit by the mechanics, then have one or no stacks of Aetherflow left, Aether on 30s + CD, and the tank announced another Buster incoming, and all I can do is think "Oh Sh**...", and try to keep him cured up as much as possible.

When there's a bard around of course I never have to worry about MP, no matter how much I cure, but I can't/don't like relying on them. Too often there is only one bard and he dies from some mechanics and I'll need to blow my Swiftcast and a chunk of my MP rezzing the other healer or something, and be left with not much MP to cure with. I know my problems are caused by players making mistakes, but still, it happens often enough for it to be a concern.