Maybe not, but the scientific community seem to be bouncing lasers off the thing. This is not just limited to American scientists apparently.

I guess you haven't seen mirrors in any footage because they are boring. The public would rather see astronauts bouncing around the moon than a picture of a mirror. People could then claim that it's a picture of a mirror in the desert, not on the moon...

Now you say nobody knows for sure. If you can accept that laser measurements to the moon can be taken, then you MUST accept that someone put it there. If it wasn't the apollo missions, then it must have been aliens or some secret mission we never heard of - both of these scenarios are more fanciful than the conspiracy theory...