Shaved the 'stache

In my adult life, I have shaved my mustache precisely twice that I can think of.  Once was probably like 10 or 15 years ago, and the other was this morning.  Why do it?  Why not?  Curiosity played a big role in it, really.  Besides, it will grow back if I decide I don't like it.  So, far, though, I'm liking it.