Searching For Clair Huxtable

We live in a society where men having a "side chick", also referred to as a mistress (if married), happens way too much.  To some men, being in a relationship without a side-chick is like eating a meal without something to drink – Yes, it can be done, but it not as enjoyable.  No matter society's opinion of a side chick, there are plenty of women who go along with this dynamic.  Sometimes it's the part a woman chooses to play, and other times it's a role given to them and they try to deal with it.  So why is this particular woman finding herself as just the side-chick and not the main chick.  Could it be that it's a role she accepts?  TV shows like "The Real Side-Chicks of Charlotte", custom T-Shirts promoting the behavior, even a "Side Chick 10 Commandments" and "Side Chick Contract"s would prove that this role is not only embraced but welcomed.  There's an assumption that the 'other woman' has some grand premeditated plan to displace the Mrs./main chick or is gun