[mercurial]

Actually, that's what we use with a rather large codebase, and it works out pretty well. Different tacks for different people, I suppose.

[timr]

Not really, no. It's not a matter of opinion.

You can obviously get away with not documenting code, but you don't know what it's costing you. However well things are working out now, I can guarantee that they'd be working better and faster for your team if you spent the time to write good documentation.

[mercurial]

I'll just leave this here: http://www.martinfowler.com/bliki/CodeAsDocumentation.html

You may think Martin Fowler is one of these "experienced people who suck at what they do", but you're likely to find yourself part of a small minority.