I loved programming before doing it as a job. Now, I really can't be bothered to program outside of work. At what age did you make this change? I love medicin

I loved programming before doing it as a job. Now, I really can't be bothered to program outside of work. At what age did you make this change? I love medicine, researching diseases I hear about and learning about the body is hobby for me. I would love to get into it but I am almost 40.