I've never seen a UFO. Never had an abduction experience. The closest experience I have had was that I have seen crop circles. One theory for crop circles is that they are places where a UFO has set down.
Do I believe? Yes, I think I do. Our earth seems huge to us, it takes days to fly around it. But when we began going to the moon, the universe opened up to us. We have earth, then our earth/moon connection, then our galaxy. And we haven't even explored all of our galaxy. What exploratons have been done has shown planets that could once have sustained life, or may be close to sustaining life.
We are only one galaxy, and there are many more galaxies out there. So many we can't see them, we can't map them and we can't track them. If more than one planet in our galaxy could possibly sustain life, then why couldn't another in another galaxy have life? And why are the government scientists so determined to find proof of life on another planet in our galaxy?
If there is life on another planet, why haven't they reached out to us, maybe opened diplomatic relations? First, why would they? If they have found us, but we haven't found them, then they must be much more advanced. And we would be like a group of aboriginies in some forgotten corner of the world. Worthy of study, but maybe not wanting to intrude their world and technology on ours. Since they may have ways of studying us without immersing themselves in our society, then perhaps they have decided to do so. Like a wildlife reserve in Africa, where they don't allow people to visit unless they are scientists doing study. Esp. since all our governments have chosen to deny their existence, perhaps they are aware of that and chose to allow it.
To them we may be a more primitive people, and with our wars, environmental issues, technological advances, perhaps they just want to keep an eye on us. Or perhaps their world once was like ours, but like ours is becoming they became built up so much that there is no longer any "nature" or "green spaces". Perhaps that is why they wish to study us, because we are where their society used to be.
When I first learned about aliens, I noticed one thing. Of the descriptions of aliens, though there may be minor differences, they are all basically described the same. Even in the very early reports where most people who claimed to have "seen" things, probably hadn't seen someone else's reports.
UFO's in the sky, have been described by astronaughts, pilots, doctors, lawyers and LE. Yet our government denies they exist. Why? Because of fear I think. A society capable of reaching our planet from another galaxy would have to far advanced from us. And if they are that advanced, then their weapons would definately overpower ours. Then there is the great Orson Wells radio hoax. Has anyone read about that? When he had the show where he said aliens had landed, people were evacuating, people were afraid. So to keep panic away, I think the government decided to keep the secret. Besides, they aren't offering to reveal themselves and their technology to us. And when by some chance- like Roswell, they get the opportunity to study their technology then we become more advanced than other countries.
I believe it is possible there is alien life and that they have visited here. And I do believe the government has covered it up. How much of the story is true and how much is hoax, I don't know. But where there is smoke, there is fire.