Being a mistress takes a certain level of skill. It's not a role designed for every woman.
Historically being a mistress meant being a 'kept woman'. Now that women are able to support themselves -- this is no longer the case. Although -- financial, travel and domestic supplements often still exist.
Those who believe mistresses are degraded are missing the point. A mistress doesn't require his love or devotion. She's an entirely different animal. She craves his cock, spontaneity and freedom. She will never replace his girlfriend or wife nor is she interested in doing so.
RULES OF THE MISTRESS:
My name is Vanessa de Largie and I'm the sex-columnist at Maxim Magazine. The Victress is my sex blog. You won't find political correctness or romantic bullshit here.