We usually don't because the last time we did, we ended up with disastrous results, or it got too frustrating to incorporate this new process into our daily makeup routine. Not only that, just think how difficult it can be to adjust to a whole new lipstick color, let alone a whole new look. It only means that you've perfected this look,time and time again, so much so, you could do it in your sleep. You're so good, that by now, face it, you're bored. Not only is it hard to try that new color, but to get up the courage to do so.
Models do it all the time.
But I'm not, and I don't. That's all it takes to conquer something new. A lot harder than it sounds. You'll get a blank stare, or a look of horror. As a makeup artist, I have to do my own face every day.