... If you NEVER again have to worry about money (not about having millions, all your current needs are met comfortably, and then some)... AND... you need work only 6 months a year.
It's a hypothetical situ, so don't fall off the wagon talking about how much things cost, OK? Please?
So, let's say, you can spend 6 months a year to do as you please.
Would you want to study the ins and outs of horology seriously - whatever aspect thereof: making, designing, repairing, marketing, etc.
I myself would like to "go to school," and learn at least the fundamentals from the ground up, and get some serious shop time -- solely to satisfy my own curiosity, and to acquire the ability to tinker at will with almost any watch.
Might even consider going into design & manufacturing if I find some cool people to work with.