Ay ay ay... I'm sorry but I don't accept 'not being asked' as a valid reason not to design to web standards.

I try to design to web standards - admittedly not always to the letter of the law, but certainly in spirit. In other words every page may not validate, but usually it's for a simple and (in my opinion) good reason.

Here's a good piece on why to use Web Standards, here's another really good view on using web standards.

From my own perspective I have myself found using Web Standards to greatly increase findability.

I personally think it's important to be developing to web standards, and as such I don't wait to be asked.

Most clients won't know to ask for a site designed to web standards... that doesn't mean they wouldn't want it if they knew the benefits.

i highly recommend looking into web standards and considering passing on the benefit of them to your clients!

Best of luck!
Frank