What other character has so much variety on a font to font basis? Most characters are basically the same, give or take serifs, thickness and small curves[1]. An ampersand can look completely different in two font families! Its one of the characters where the font designer gets to go all-out and make something curvey and fun.
Also, ampersand is fun to say.[2]
1. Yes, I know this allows for an incredibly huge variety. But, thats nothing compared to the ways you can make an ampersand.
