I used to think the only argument for keeping it was for (only) tanks messing with VIT and STR, but since that's no longer a thing and the devs flat out told tanks to allocate all into VIT for 3.2, they pretty much confirmed the pointlessness of giving a choice on the bonus point allocations and it has become more of a hassle than an actual "bonus."

The whole SMN or SCH thing is also just a petty inconvenience when the work-around is as simple as holding on to Keeper's Hymns and using them to re-allocate points when you need/want to play the other half. So, they can't even say "we didn't want players to be able to play both jobs optimally," when you very well can, but there's an irritating (but hardly difficult) process to go through.

My mind is blown that they've held onto this feature for as long as they have. If its not gone by the next expansion or the day it goes live I'll assume that they can't be bothered to do anything about it and would rather ignore it.