[plain talk]

Until we can greatly exceed the speed of light (if even possible), there are no ‘possible’ Earth like planets even close enough.

Not necessarily. If there are Earth-like planets within say 10 light years and we were able to achieve 1/10 the speed of light then we could reach them in 100 years. But it does make my earlier point that only those relatively close to Earth - a tiny portion of the universe - are of any serious interest in a discussion like this. God apparently spread us apart on purpose and for good reason.

[GonzoGOP]

Actually a Ram-augmented interstellar rocket could make it up to speeds of almost .3 C. At that rate Gliese 581g would be well within the rage of a two or three generation starship. Since a very large starship is little different than a space colony people of the future, who will likely have grown up in space colonies, would not consider this such a big deal.

We are talking dim distant future here. But hey Columbus opened the trade route to America in 1492. And the Jamestown colony wasn't founded until 1607. So a 115 year gap between discovery of a destination and the first tentative attempts at colonization isn't unprecedented. But we won't be any reason for going to other stars until we have completed colonization of this solar system. And that will take someplace between thousands of years or if we stay at the current pace hundreds of thousands of years. Like I said dim distant future.

[UCANSEE2]

God apparently spread us apart on purpose and for good reason.

If they are anything like us, then God spread us that far to keep us from wiping out each other's civilization.