It’s got things I miss a lot (channel box, command line, nodes for things other than materials, textures and compositing) but a lot of what Blender has makes me super-angry I ever payed money for Maya. Case in point mouse-based Move/Scale/Rotate (as opposed to click-based) is probably why I don’t have carpal tunnel syndrome.
Autodesk also has a hilarious short-coming, which Adobe has as well. In pay-to-use commercial software, such as Maya and Max, they’ll have a bunch of fancy add-on programs they extra charge money for, such as Renderman and MotionBuilder. As a result, five years go by, and the technology has quickly outstripped these tools. However, because Autodesk wants to keep protecting that revenue stream, they never just add it in permanently to their software!
Meanwhile, Blender is free, so the only questions of functionality that need to be asked are “is this technically attainable?” and “does someone feel like doing the work?” So as a result, Blender gets new toys whenever people figure out how to implement them. I haven’t used Maya since 8.5, but even on 8.5 they still charged you extra if you wanted hair and fur. WTF, right?