A story about a broken CFL:
http://www.foxnews.com/story/0,2933,268747,00.html

If you break a CFL on the carpet in a bedroom, for the sake of discussion, lets say in the bedroom on your own child, what do you do?

I'm pretty sure that if a customer learned that I broke a CFL and spilled mercury in their child's bedroom, I'd be paying for a professional cleaning, and a probably a hotel bill on top of it.

That's a fairly hefty liability to install a new light fixture.