The flip side of that is your site's content better do an extremely good job of reflecting your site's name/URL or else it's going to come across looking quite stupid.

You might just be limiting yourself to a very narrow type of content and even the slightest variation will make your site look illegitimate.

There's nothing worse than a "hairybearystudmen.com" URL with some only lightly tufted early 20's guy in the tour, or a "slimyoungtwinkholes.com" site with an occasional 25yo video tossed in.