Given the vastness of cosmos and the richness of star systems it's just ludicrous to assume earth-like planets are somehow special and rare.
At these scales nothing is rare.
At these scales nothing is rare.
Rare: if we take a sample of N random planets, only n << N of them will be Earth-like. E.g. 0.1% is "rare".
Scarce / few: if we take all the planets in the Universe, only a small absolute number of them will be Earth-like. E.g. 100 Earth-like planets is "scarce" or "few".
That is, Earth-like planets can be not scarce at all, but still rare. Much like while all water in Earth oceans contains 20 megatons of dissolved gold, molecules of gold are rare among molecules of water, which makes extraction of them impractical.
If there are billions of Earth-like worlds, but distances between most of them are all in millions of light years range, we are still effectively alone in the region of the Universe which we can reach in the duration of existence of our species. Any communication even to the closest Earth-like planet, even if it builds a civilization like ours and we have something to talk about, becomes impossible, too; only one-way broadcasting could reach us (or them).
So no, Earth-like planets abundance has a lot of implications for our species (or our close descendant species) to be able to ever settle in another star system.