Scrum is now the default agile software development methodology. This management framework, which is "simple to understand but difficult to master", is used by 66% of all agile companies. After two extensive workshops, more than five years, and a couple hundreds of sprints working in Scrum, I have some points of criticism about it. I think it's not naturally conducive to good software, it requires too much planing effort on the part of the developers, and it inhibits real change and improvement. In the following, I will try to put these into more detail by organizing them around more concrete topics.