UFO believers, how do you think ET gets here?

The reason I ask is that once we come to grips with the vastness of our Universe or even the Milky Way Galaxy we sit in, we get a real appreciation for just how daunting the task connecting with extraterrestrial intelligence is going to be. For those who haven’t thought about it. here is an idea of the scale ET would have to deal with.

The nearest star to Earth, Proxima Centauri is about 4.24 light years, or 24,7 trillion miles away. If we were to go there in the fastest spaceship we can envision actually building with today’s technology, the round trip would take a mere 20,000 years! But there is no evidence that any habitable planets orbit Proxima Centauri. Alpha Centauri, a binary star system consisting of Alpha Centauri A and B, is just a bit further at 4.37 light years from Earth.

Moving out from there, most of the bright stars we can see in the night sky with the naked eye are stars close to us (astronomically speaking) in the same arm of the Milky Way Galaxy we are in. Our galaxy itself is about 100,000 light years (5.88×10^17 miles) in diameter and rotates about its center once every several hundred million years.

Given the incredible distances that any intelligent life would have to travel to pay us a visit, and the fact that while wormholes are theoretically possible, none have ever been found and if they do exist, entering one would probably collapse it, how do you think space aliens get to earth? Or do you dismiss the whole idea as silly superstition?