"Beauty is in the eye of the beholder" as they say. In the end of the day, unless the character is hideously deformed or something of the sort the descriptions of "ugly" or "beautiful" are rather open for interpretation, and thus don't really say much about the character. If anything, I often take those words appearing in a description as a red flag, since that is the player trying to force behavior from others towards their character. Describing your character as beautiful comes off as saying that if my character doesn't find your character beautiful then something is wrong in my character's perception.

Outside of description though, I don't particularly care whether characters are beautiful or ugly. Maybe it' more significant for people who use photos as faceclaims, but me who uses mostly anime faceclaims and the occasional realistic art faceclaim if I'm playing something like a creature that I wouldn't be able to find good anime images for, matters like these seem trivial to the point of never being brought up. Same for something like ethnicity, unless the country of origin is somehow relevant most of the time it's a matter that you might as well throw a dice for.

As for images I use, well I do tend to use pictures I find 'cute' or 'cool' or 'bizarre', depending on the kind of character I'm aiming to make. My reasons for not going out of my way to pick anything more conventional or ugly is part what I said in the previous paragraph and part the fact that I pick images based on what I like to look at. If I'm going to create a character sheet and go back to it often, or re-use the image in posts or anything of the sort, I might as well pick something I actually will be happy to see.