It would be really unwise to put much weight in something so subjective.
1. Do you think where you are in life professionally and otherwise has been significantly affected by your looks?
I hope not. I would like to think I don't work with people that superficial.
2. Do you think it is commonplace for potential employers to view looks just as if not more important than experience?
I think it depends of the position and the field. I work in the sciences. My skill sets are more important.
3. On the other had do you thind being to beautiful is a curse? That one may not be taken seriously for a job or socially treated poorly because a person is too pretty?
Seriously. I have always believed that this is a figment of the "beautiful one's" imagination. If you are attractive and people don't like you, it's probably due to your personality or lack there of or just maybe incompetent