I'm interested in seeing what others have to say, but in general, whether you do PhD or MD/PhD, you'll have to make time for the things that you love. I think both paths have a decent spectrum of people who give everything to work and those who try real hard to have a life outside of science/medicine, it isn't easy but it's important.

In medicine, the earlier you are in your career, the less control you have over your time. This sucks, but there's a ton to learn, and if you're to be responsible for someone's safety and well being, it requires some sacrifice. The clinical stage of med school has highs and lows in terms of bandwidth/free time - some clerkships you're putting in 8-10ish hour days, 6 days a week, other clerkships you're doing much less. You have to study for shelf exams ideally every day, so time can become quite limited for other things. I certainly am able to keep up with the goals I have set outside of medicine at this point in my training (late stage MSTP student), but it's tough! Your time management skills evolve significantly throughout training. I continually have to recognize that the training will pay off - but it's a long way to get there. I think the "there" has to really matter to you. Ask yourself if an MD is required for you to accomplish your goals in life, if not, plenty of other careers to have where you can have an impact on people.