Are there not examples where a statement is pretty much guaranteed to live on its own within a block? Having said that, my own style is to always include braces, for aesthetic reasons if nothing else.

When I omit braces I also omit the indented line. I would write:

    for () foo;

Makes it clear it's ONE statement. At least for me...

A function or class that doesn't fit on a single screen is a bug waiting to happen.

People keep saying that, but do bugs like that really happen? In my entire career as a professional software developer I've never seen it happening. Not once.