Is it normal that the vocalist is always the most good looking in a band?

I think it's generally true even if sometimes, he may be the least ugly:)

I was gonna say Isaac Brock looks like he could have down syndrome but then I realized his voice is also shit.

Not always

It's true. The singer is usually the best looking one.

Simon LeBon back in the early eighties!

Isn't this mainly a pop thing? I think it has less to do with good voices and more with good marketing.
Then again, pretty people might be more confident which is very important for a frontman or woman.

stephen tyler

Totally normal.