I find it extremely doubtful aliens are visiting Earth, due partly to many of the same reasons others here mention, but mostly because of the vastness of distan

I find it extremely doubtful aliens are visiting Earth, due partly to many of the same reasons others here mention, but mostly because of the vastness of distances involved and the whole "speed of light" situation as we understand it thus far. Of course there's a whole mess of "quantum" stuff we still don't understand which could potentially make me entirely wrong about that, and there could be aliens "popping in" (and out) on a regular basis for all I know. I'm just a teensy speck of barely conscious "meat" in all this giant Universe. What do I know? Very little, really... ;)