title: What are some reasons to use var instead of let in javascript?
body: <p>With the new keyword <code>let</code> for declaration of variables in javascript ES6, I can no longer think of good reasons to use <code>var</code>. So far, I have been doing just that and I do not see any disadvantage of using <code>let</code> ALL THE TIME.</p>
  
  <p>What are good reasons to use <code>var</code> today? Is it a good practice to use <code>let</code> all the time today?</p>