Sure, we're finding them but we have no method of reaching them.
The other thing, and this is really strange, if we could build a habitable space craft that could fly close to the speed of light, it wouldn't matter if it took thousands of years from our point of view to get to a habitable planet, due to special relativity from the point of view of the travellers that might only be decades: https://en.wikipedia.org/wiki/Special_relativity#Time_dilation.
Not yet, but galactic colonisation may well be game on in the not too distant future.

