I think it's great that we're finding exoplanets. And maybe one day we'll modify ourselves genetically, or live on those exoplanets long enough to adapt to them.
But I think it bears reminding that we will never find a planet anywhere more perfect for us than the one we're on. We evolved to fit this planet, all the way from a cellular level. This planet and this biosphere is our match and our maker. Not only does it provide perfect gravity, air pressure, water vapor, day/night cycles, lunar cycles, temperatures, and a host of other physical aspects, but the food we need to eat literally grows on the trees and at our feet. No matter how many exoplanets we find our how close they get to earth in many ways, none of them will ever be a more precise fit for us.
Over the next few thousand years as humanity expands into space I'm certain that we will modify ourselves genetically and cybernetically to accelerate our evolution into new environments, but nothing will ever fit as easily or be as comfortable as the place we are now.