It makes me a better mother and wife if I move my body.  When you are healthy you just feel better and part of being healthy is being active and exercise.  The difference is amazing.  If I haven't moved enough my body starts to hurt. I'm more tired and cranky too.  I've made it part of my identity so now I have to because it's part of who I am. Like - "oh that's Jacque, she's a fit mom."  And that has been key for me to stick with it.