If your license won't hold up in court, then you might as well not bother with one. You really can't be cavalier about the langauge in your contracts.

Take the recent landmark case of Jacobsen v. Katzer -- Jacobsen nearly lost because he was using a slightly oddball open source license (the Artistic License) that was not written by a lawyer, had some ambiguous passages, and didn't quite say what he intended.

Sure, it's less of an issue with an extremely permissive license like this one, but let's imagine you aren't around any more and some company wants to use your code... but they can't because their legal department doesn't trust the license.