Love actually hurts his team when he starts doing that. He is the best rebounder in the league, so stepping away from the basket to shoot 35% (career) on threes is an epic fail.
Stretching a defense doesn't matter? That extra 50% of PPS (making those shots effectively 52.5%) doesn't matter? Forcing the other team to game plan another wrinkle doesn't matter? By your logic, why doesn't every team just shoot all of their shots within 5 feet and gang rebound on every possession, then?