It is always interesting and sometimes even important to have intimate knowledge of a composer's life, but it is not essential in order to understand the composer's works.
Once you start playing a piece, there is a connection between every note. You cannot say, 'I will not concentrate on this note.' You cannot ignore things the way you do in the rest of your life.
I maintain music is not here to make us forget about life. It's also here to teach us about life: the fact that everything starts and ends, the fact that every sound is in danger of disappearing, the fact that everything is connected - the fact that we live and we die.
For many people, music is here to let them forget the daily chores of life.