Once you down Titan, you get your relic weapon - with maybe some dungeons in between if you don't have philosophy stones saved up. The loot from Titan is worse than the relic weapons, and is clearly only suitable for alts; yet anyone can roll need on it and take it for no reason.
I was helping a tank who'd been trying for weeks to down Titan. I'm a DPS that doesn't die to avoidable damage on Titan, which is apparently very rare. I've done Titan a few times and was feeling charitable, plus I'd like the WHM cane eventually. I spent 3.5 hours in there because most of the group kept dying. On the run where we finally got it, I used BRD lvl 3 limit break to bring back about 4 people in the final phase, and tanked the boss when the PLD died and it was at ~2%, surviving quite a while thanks to featherfoot and Titan wasting time casting Weight of the Land.
So the fight ends, tank compliments the amazing healers (one of whom was revived by me), not so much as a thank you & then he rolls need on the shield and wins (obviously, as there were no other paladins). I'm sure it will be very useful for him during the minute long trip to turn in A Relic Reborn.
I have no intention of leveling a PLD any time soon, but this happens in half the groups I've been in - even when it's agreed to not roll need on anything. There's no reason for it, and it would benefit everyone if it were not possible.