It&#x27;s the 80&#x2F;20 rule for me. Think about the type of client (individual user&#x2F;corporation) that is still using &lt; IE 10. I&#x27;d wager that they&#x27;re well paying, yet difficult to deal with. They&#x27;re entities who live in a legacy world. I&#x27;ve worked in those places, and honestly I won&#x27;t develop software for anything but the first-most and second-most recent platform, because I want to target people like me. People who care about value over cost. People who value time over money.<p>Entities who use legacy software have more problems than their browser. It&#x27;s symptomatic of a much larger issue, and I love being able to filter them out!