Even if Proxima Centauri, at 4.27 light years distance, had a habitable planet it wouldn’t really matter since we don’t have the technology to get there in any decent amount of time.
But maybe THEY do to get here. :-)
I have this fantasy that, just as people muddled along without electricity even though it was all around them, we stumble through space at liquid propellent speed until somebody says, "Hey, look what I discovered!"