So, all UFOs are mundane? What´s the fuzz then? Why do governments have thousands of UFO-reports? Why are there cases that defy mundane explanation? If this is so easy, I wonder why sceticps just don´t explain those cases away. They can´t. Only thing they can is to speak a lot and loudly. That´s not however very good. It solves nothing. Where is the will to actually trying to find solutions to cases instead of ridicule. Scientific approach would be welcome to this forum.
There are a lot of UFO stories that are too vague for any kind of identification.
One of the things about science is that conclusions must be backed up with solid evidence, and that it is perfectly all right to say "I don't know" if you lack that.