Two night shots and a question?

Heres two night shots and the question. Why do camera makers make a camera with three long exposure modes, night mode with flash high iso, night mode long exposure tripod no flash and fireworks... long exposure no flash, yet have flash enabled by default on all three? Whats the point of long exposure tripod no flash if the bloody flash still fires? Twats! theres two ways of disabling it (well three if you count a hammer) you can turn off the flash in the menu and that works until the battery goes flat and it resets defaults.. or you can duct tape over the flash... guess which option I took....