... and i'm going with the brunette
Wow, you're awfully decisive!
😀
In all seriousness, this is a difficult question to answer because there are a lot of variables involved. Not all specialties and locations have their physicians sacrificing all of their personal life for the work. Of course, you need to be prepared for the idea that you might not get into a less demanding specialty, or that the area you settle down in might be very demanding regardless of specialty.
On the other hand, if you don't go into medicine, how much will it matter to you? Some people can give up on medicine and not be too fazed by it - they'll admit that they were pre-meds at one point, but gave up on it for various reasons that they're happy with. Other people become very bitter and seem to develop something of an inferiority complex toward anyone in or pursuing medicine. Obviously you'd want to avoid the latter situation, although that alone isn't a good enough reason to keep pushing for medicine.
It's too bad that we can't live life backwards. As young people, we're often inclined to put our careers above other elements in our life. I've heard quite a few older people say that the job ultimately wasn't so important, and that the important things in life were the people, their families. Or perhaps it's just a case of "the grass is greener" and those people already had fulfilling careers?
My advice for you would be to keep working with the plan of going for medical school. When you do your volunteering and/or shadowing, do it with the goal of finding out more about the lifestyle and work demands of the people there. Bearing in mind that what you see won't necessarily be true for everyone (or even most) in that position, figure out if it's something you could see in your life, or if you foresee it making you miserable.
It's commendable that you're asking these questions now, though. Since you're putting a lot of thought into it, I'm sure that you'll ultimately arrive at a decision that is right for you.