Originally Posted by Toedrag

Lots of reasons...we eat with trays on our laps. So, if you drop anything, it grinds into your pants under the belt. Also, the "crotch strap"...do you want that thing actually touching your clothes? Sh!t, urine, menstrual...you get the idea. One final note...have you ever spilled water on the seatbelt? The black filth that comes off of it from all of the years of use is disgusting.