I've just turned 50, and worked out my entire adult life -- won't miss more than a couple of days (if sick). And I have to say that it's the way to go. YOu will look younger, feel fantastic, and have so much energy.
It's funny, but when I meet new people, I'm surprised I ask what they do for a workout and they say that they don't. EVER! It's just one piece of life for me, like eating, sleeping, bathing . . . seems unthinkable that someone doesn't do anything along that line. I would feel wretched if I didn't work out and eat well.