Why do people save LB till the end of the fight?

[Vahlnir]

If I'm in a dungeon playing a caster, and my fellow dps does not use it after a certain point, I will end up dropping it on a large group of trash, multiple times if possible. Period. Never seen anyone complain. I usually hold off on using it if my co dps is a caster and I'm a dps for that reason, because it is a bit more common to do so. But like I said before, if they don't use it, someone has to. I'll hit a boss with it if necessary. Otherwise it is wasted. If it's a raid, sometimes it is best to make sure the clear is in the bag before nuking the boss. That way if something does go wrong and a healer is still standing, they can use it themselves to all but guarantee the clear even after a series of unfortunate events. This usually happens when the group is sort of...unsure of one another. You can tell when a group knows their stuff and if confident, so using a LB3 when it pops up is a non issue regardless of when.