It is true that we've gotten a lot of torture & violence queries of late that seem to run story based, but this is no reason to eliminate the tag. If anything, we're just demonstrating that the forum's system works by closing off topic queries.
So, what about torture itself? Well, it has long been a part of jurisprudence. For long, it was considered both a valid means of obtaining confessions & eliciting evidence and also a valid form of punishment itself. Torture also plays a part in various coming of age rituals, initiation rituals, magical rituals, and religious & spiritual practices. It is thus part of the very culture.
WB.SE exists for the purpose of helping writers and geopoets build up their fictional worlds. It's not all bunnies and flowers. Sometimes the flowers bite back, slowly digesting the bunnies in the process. In other words, well made worlds delve into the questions of evil as well as good; and also into the mindsets of peoples & cultures that turn blind eyes to objective evil and even actively engage in it for seemingly noble purposes.
We've also dealt with this query before. Not tag-specific, mind, but in general terms:
We "torture" ourselves with this tag because it is a legitimate line of inquiry for any writer, geopoet, game designer, or hobbyist to delve into. E.g., two of the stories I published at Universe Factory couldn't be written without consideration of the arts of torture and execution in the service of Justice.
We have tags in the first place, for those who use them, to organise queries and help people search by topic. It's my contention that the tag ought to be kept as it is every bit as vital an aspect of worldbuilding as creature design.