Let's go to Kepler 452b.
But lets consider how long this will take. Kepler 452b is 1,400 light years away.
Getting to Kepler 452b with current space technology would take a very long time, and the trip wouldn't be survivable. But lets say the ship was durable and could carry the resources necessary (food, water, air, etc) to make the journey safely. Our current propulsion systems would get us there in about 22,500,000 years. That's so long, that assuming we had a cryochamber to sleep for millions of years during the journey, we would arrive there and awaken to find that humans back on Earth would be long gone and that they invented warp speed and colonized Kepler 452b and had lived there through eons of civilization and had since gone extinct there too. We might find statues of nations which had risen and fallen. We would find records of lifetimes we could not imagine. We would find great art and new masters and tales of new heroes that would rival the mythology of ancient Earth.
We might find a habitable world, or a world that was once habitable or never habitable, or a world that's habitat had been destroyed by the chaotic twists and turns of human civilization. We might even find intelligent non-human beings there.
We might also find the remains of some very strong people. Humans would have evolved great strength under the high levels of gravity on Kepler 452b. Humans would weight double their weight on Earth and would evolve strong bones, muscles, and hearts to handle it. We would find quite different creatures than what the weak and sickly humans were back on Earth.
We would also not be able to walk around when we arrive. After millions of years of space sleep and having frail human anatomy, we wouldn't be out for an easy stroll.
Suppose we don't have a space ship and chose to "walk" to Kepler 452b. If we walked at a brisk 225,000,000 years per light year, it would take us over 315,000,000,000 years!
