Why cool and weird stuff like that never happens on the sky above my head?
I'd say definitely man made
There is absolutely no need to discuss "man-made or not". It was a SpaceX rocket carrying ten iridium satellites into orbit. We know where, when, why and who fired the rocket into orbit at what trajectory.
If you want to see this cool (and not at all weird) stuff, you'd simply have to move to a place where you can observe the rocket launching and climbing the first minutes.
I'm not saying you're wrong or anything but here is the deal: When NASA launches something into space, everyone knows cause you see it in the news and it's scheduled and reported on etc. But here, where are the reports? Where is the news about the launch. A Space X launch would obviously be everywhere in the news.
So if you know for sure it's Space X, show me the official report on this launch.
EDIT: Unless it's a secret launch of course but why would it be secret if it's a non military project?