I guess it depends on what you started with first, most of the complaints about Blender I see have to do with the interface not being like 3DS Max, rather than about actual functionality. Not like I can complain, I started with AutoCAD R14, adding each quad manually specifying the position of each vertex in the input line... (try to beat that)
Heh, I did that took (started with Acad R14), the best part was when after 4 hours of work without saving, I pressed the power button (I had a stupid keyboard where the special keys were below the delete/end/page down keys), I got so mad I hit the CPU on the side, and a memory clip detached and flew out on the other side (it was open because of cooling issues).
As for blender, it DID had a terrible interface until recently... Blender before 2.5 was just bad, and the blender community extremely defensive, they got outright agressive when you commented on their issues (I once made the mistake of commenting about the interface in a blender conference I was attending in person... baaaad idea...)
But I think all open source communities are like that, even when the devs know that something is broken (blender for example had a official document describing the interface issues, it was a PDF explaining the changes planned to 2.5 and why... if you gave that link to some fans they would swear it was fake and that the current version was perfect and that you was some noob asshole for wanting it to be different... I saw this behaviour also with GIMP, Inkscape, Linux, emacs, and so on...)