content: From a user perspective, you probably wouldn't care. IE11 can at least pass the acid test, so then websites don't have to be entirely recoded for different browsers. But, as long as there's still a significant number of users on an out-of-date browser that's not getting updated to meet new standards, then everyone is going to be making websites for those users, holding everyone else back for years. Add to that any of the CSS and JS quirks that IE11 has. Keep in mind that these are the people that decided to make https://developer.microsoft.com/en-us/microsoft-edge/ie6countdown/ to track how long it was until their own IE6 died.