The main benefit imo is not having other car's headlights directly at your eye level. When all the other cars are so much bigger and higher than yours they often don't see you (or pedestrians), which is somewhat dangerous. Of course by then switching to an SUV or truck you instead contribute to the problem which propagates the cycle further. So I stick to my little hatchback with 40mpg+ and just deal with the fact that I'll always have headlights higher off the road than my face and be taking evasive action to avoid getting hit every once in a while.