As a writer, or as a filmmaker, you have to present yourself, and part of what yourself is is what you're interested in, or what you think is funny, or what you think is sad, or what you think is horrible.
I'm not obsessed by how I look or with being reed thin, but I do think that as a woman in my 50s, I have 40 years ahead. Looking after yourself goes hand in hand with looking good.
Luckily, I was raised by people who'd already seen all the yuck stuff, which is why they originally didn't want me to act. I understood the difference between getting a part at a Hollywood party and getting a job.