[ashwin_krish]

Going along with grlthgn, The bigger problem with 'Doing what you love' is most times, we are not aware of what we love. It is just impossible to find what you love. Sometimes the thing we love is short lived. This leads us to the next question, do everyone in the world have some this life-long activity they love? That question has never been answered.

[mattgreenrocks]

It's not impossible, but it does require introspection, and a willingness to change things up. The combination of qualities excludes many people - you can have introspection without action, but it can end up in depression.

It's also partially generational, too. Later generations aren't as tied to their jobs because they grew up in a world where, collectively, employers didn't take quite as good care of employees.