From what you two have just said above, I don't think I would really ever stand a chance of making one.
Thanks for explaining it all to me.
I just really wanted to know why it is so tremendously hard to make one, and how possible it would be to make one.
I think the bottom line is that a level editor is possible, but no one has the time or can be bothered with the effort to make one.
Well done all of you for your huge effort on making a level editor. I appreciate it.