Voxels are very appealing though and look pretty.
Has anybody ever said anything on how most popular games are RPG's, or FPS's? No. Fighting games especially are overrated, and people should learn that not every good game has to consist of weapons.
The point is that there are fps voxels games and rpg voxel games, as well as pretty much any other cross-genre you can think of. Voxels being appealing is an opinion, I dislike them because if they're easy to make, unoriginal, and looks worse than smooth/vertex terrain.