Strangely, I don't fear it.
I recently learned that frozen embryos have no known shelf life. Seems to me if humanity ever leaves this solar system, it will require embryos and artificial parents (not to mention an artificial womb).
https://www.imdb.com/title/tt6292852/?ref_=nv_sr_srsg_0
We already have in vitro fertilization. Genetic selection already exists, to an extent. Genetic engineering is coming soon. My children will likely be the last "natural" generation.
That's not to say that there's no problems. The biggest problems we will (now) face concern ethical use of these technologies. It will make global warming seem like a silly joke as far as problems go.