It's funny - lots of people have this reaction to the paren-lessness of Perl 6. "Yuck! I'd never leave them out!" Often with a rationale of some sort.

A few weeks pass. The person gets comfortable with Perl 6. The scales come off; the parentheses go away.

I've written a fair bit of Perl 6 code for 18 months now. I find the lack of parentheses easier to read and less cluttered than putting them in. After for, if, while et al., they simply don't have a purpose. They don't mean anything. The only reason other languages have them there is that they have things like braceless forms of those keywords, or that they cargo-cult C.