Alright. See you over on the XHTML Internet. Oh, wait.
It's not a concession you want to make unless you really have to.
And that's because the end-user is at the mercy of, but not party to, an over the air interface between the producer and consumer that you can't verify ahead of time.
So if you're consuming a stream of supposed xhtml `<p>foo<p>bar</p>`, you have to decide if you want to screw the user for the producer's mistake for a single fuck up in the website's footer.