Ynot are you truly apathetic or are you content but feeling guilty about it? Are you gauging your life by what you think society calls "normal"?. Your current life sounds very much like mine, yet for a time after my divorce I kept thinking I was missing something or needed to be "passionate" about some cause. But you know what? I got to a point where I said f**k all that BS. I spent many years of my life moving at 100mph focused on doing it all all of the time. Why? So I could be the perfect dad? Perfect husband? Perfect business owner? Perfect community member? blah...blah...blah. Sure that was great and I might do it just the same if I had to do over but the thing is I don't, I'm at the "been there done that" point of my life.
For many years all I wanted was for my life to slow down so I could enjoy the fruits of my labors, and that's where I have finally arrived, I (and maybe you) need to recognize that, relax and enjoy it.
You will visit with your kids over the holidays and enjoy each others company, great. Business is doing well and you have the time and money to enjoy yourself, great. You set your own schedule, go where you want, do what you want when you want as you want, great. Sounds perfect to me. I for one don't need fireworks in my life anymore, I am very very happy watching a candle flicker in the dark.
Ynot my point being you are in a position to do or try anything you want, if you need purpose and passion to focus on than find it, but don't feel that you must just to look "normal". Make your own normal.