Because it's easy to fix, but the effort is not _zero_ Also, people may not realize this is a problem until it actually becomes a problem. In the mean time the

Because it's easy to fix, but the effort is not _zero_ Also, people may not realize this is a problem until it actually becomes a problem. In the mean time they will be happily rendering stuff on every page load, after fetching (static!) data from mysql on every single request.