Because I want one is the best answer. Lighter than my two ars, and really just cause I want it, on the bright side, the bottom metal I’m putting on it take the same ar mags
If you already have 6.5 Grendel in ARs, then adding a bolt gun in Grendel makes more sense. As a stand alone gun it makes less sense.
But like the man said: “I want one” is always a valid reason to have one.