It IS safer though. It's like airplanes. Yes, emotional monkey brain sees a million pounds of metal hurling through the air at 475 mph and says, "bad, not safe, will fall and die", but in actuality, it's much safer than driving a car. Similarly, monkey brain sees motorcycle lane splitting, "objects too close together, will crash and die," but really the reduction in fatalities from getting crunched between two cars in a rear end collisions in stop and go traffic outweighs the minute amount of accidents caused by lane splitting and is actually safer overall than not splitting.

If you don't feel comfortable doing it, then don't do it, but it's silly to stop others from doing it out of irrational fear.