Medical students, residents, and fellows do strange and unusual things like travel, get married, and start families. There is a notion that the process of becoming a physician is like going into a black hole, and indeed some specialties are more time consuming than others, but people don't have to put their entire lives on hold. They just have to balance their priorities, which is an inescapable reality for all of us.
I have seen instances where someone in undergrad decided to "game" the system and do nursing with an ultimate plan of going to medical school. The success rate wasn't very high, and the anticipated benefits of that route were either small or nonexistent. Even for the ones who made it, the final accounting showed it to be a very long and painful way to go. Imagine someone who is working as a nurse, has a spouse, has small kids, a dog, and is trying to develop a competitive application for medical school. Then imagine that whole unit having to go wherever medical school is and living on one income + loans. It is, in a word, arduous.
Ultimately this is all very simple. If you want to be a physician then go to medical school. The rest will work itself out.
Good luck.