Why tie webbing in a loop?

Its common practice (and manufacturer recommended) to tie webbing into a loop. Does anyone know the physics or reason behind why?

because its stronger

thats all there is to it

;)

It still is done today. Buy a long length of 1" tubular
webbing (and I don't mean a double--more like about 20 or more feet long),
for anchors around large trees. You won't find any sewn slings that large.
Use a water knot to tie the ends together, just be sure to leave at least
1" of tail on each end. Bombproof.

It's interesting. Even little things still contain knowledge.