Two classes I have seen use it, and to me that is enough to keep it around. Warrior and arcanist. Warrior because everyone has a different taste when it comes to strength or vitality, people still debate back and forth in the tank forums. Arcanist because of the dual jobs, which if SE gives to all classes makes it worth it to tailor to what job you plan on using. Not to mention that clicking a few times really isn't a big hassle to me and most players.

Side note: As a paladin I plan on changing some stat points to hit the next block percent tier, so that is another use.

PS: Pikken is trolling in case anyone couldn't tell. And don't lie I know some out there fell for it.