As part of a code standards document I wrote awhile back, I enforce \"you must always use braces for loops and/or conditional code blocks, even (especially) if they\'re only one
I prefer adding braces to single-line conditionals for maintainability, but I can see how doing it without braces looks cleaner. It doesn't bother me, but some people could be turned off by the extra visual noise.
I can't offer a better counterargument either. Sorry! ;)