A good wife is someone who thinks she has done everything right: raising the kids, being there for the husband, being home, trying to do it all.
The hardest thing about being an actor, and especially when you're a woman trying to also have a family and a relationship, is to maintain some sort of normalcy. With television, you might not be home a lot, but you have a routine.
My love life is nobody's business... if I give it to 40 million people to read, what do I have left when I go home? I'm protective of my personal life that way.
If you are on a TV series and you have a hard time disassociating from that character when you get home, your love life is going to suffer, your children are going to suffer, your friends will suffer.