Versus the bullshit we have to put up from the other vendors who throw out new features which everyone else has to pick up via peer pressure even though they are poorly designed?
If you're using advanced features because of peer-pressure, then more fool you.
If you're using advanced features because you've found a use for them, but you're not using SASS and mixins (or similar), then again, more fool you
The other vendors are actually churning out progress and the burden or integrating that progress into your work is entirely optional. Microsoft can't even implement years old specs, and the burden associated with their inability to create even a bog basic browser is not optional.
This does get ridiculous. Making a simple one page site that uses many new CSS3 features gets out of control. I've switched to Sass/Compass and haven't looked back.
