8. So Many Possibilities
Is there really something out there that cannot be built by Lego? The vast range is so huge already yet there is still so much more that can be done. No matter who you are, if you were given a box of Lego, you could always think of something to make, even if its just a chair! Certainly, if a dreadful day were to come about in which Lego was to stop production, saying 'We ran out of ideas of what to make' would not even be 100th on the list of why they stopped. In fact, it should not be written down at all.
7. It's Fun
I had to put this down as a reason because, it is SO true. Its incredibly fun to just stick two bricks together, let alone building a set. Not much gives you the satisfaction of seeing something you build come together, then completed, with Lego not being an exception. It really can keep you entertain for quite a while. Even just making random items is a joy, You just want to hear those bricks click!