You're assuming that what we can produce would survive the trip, which hasn't been tested, nor is there any currently known method of producing a stable wormhole, nor can we reach any place that it could be tested. For your theory to work, we'd have to be able to produce either a stable wormhole in a semi-permanent state with static entrance AND exit location, or find a naturally occuring or alien-tech-produced one. This is all infinitesimal chance of occurrence, basically to the point of not even worth wasting mental energy on. We can barely create black holes that exist for more than fractions of a second. We have no bloody clue how to make a wormhole.
We live on Earth, not in Star Trek, or on Arrakis.
As much as I love the concept of folding space (and especially Herbert's son going back and giving an origin to the spacing guild and how they got that ability), it ain't real until it's real. IDGAF what's possible 400 years from now. I'll be dead. And frankly, my money is on humanity's extinction or vast depopulation and going back to agrarian low-tech society long before any of us have a chance to permanently escape this rock.