Either you balance life or focus on something you love, its about what's the most important to you.
Its about how you define happiness in your life.
You can't say to a person who want to balance his life as a boring person because that's what he loves to do, to balance life.
If you yourself disagree in balancing life and want to excel and achieve one thing you love and leave those other aspects of your life, then go on, its your own choice.
There's no right and wrong between the two.

Sometimes we're too emotional and forget the right reason that's important compared to feelings and emotions.