Any opinions on this UFO sighting in Texas or UFO's in general?
OK, since you asked...
I believe there is life on other planets. It's impossible to think there is not if you can get a good understand of how big our galaxy is much less the whole universe. Traveling at the speed of light it would take 100,000 years to travel from one end of our Milky Way galaxy to the other, comprised of one billion stars. That's just one galaxy. I'd be surprised if there was not other lfe actually. However as far as UFO sightings go there has never been any real physical evidence produced. We just get grainy photo's or video. I can't explain mass sightings other than it's part optical illusion and part imagination. When you are looking at the sky, especially at night, things can be very deceiving. It is very hard to get a handle on the size or speed of an object when there is nothing relative to the object you are witnessing.
Hundreds of years ago, people believed the Earth was the center of the universe. It just made sense then and most people were devoutly religious and it made sense since we were God's great creation. We now know we are just a tiny spec orbiting an average sun in a remote part of one of billions of galaxies. That kind of makes us less special. The notion that some alien civilization is interested in us just seems like wanting to make us more interesting again.
Also, just because there is no immediate or even longterm explanation doesn't automatically make it visitors from another planet. It seems like anytime this happens people go right to that. Sometimes I think we have not changed at all from the people who first saw lighning and thunder and invented Thor.