what ethics? a 26-week old fetus is considered to be a bundle of cells, and it is perfectly acceptable to dispose of it for any reason or no reason at all. given that, I see no rationale to prohibit or condemn disposing of undesirable embryos
"For 26 weeks of gestation, the percentages were significantly higher with a survival rate of 81.4% and survival without impairment rate of 75.6%."
https://www.verywellfamily.com/premature-birth-and-viability...
A bigger bundle, but still a bundle.
Sure, you don't need a womb to survive, but you still need a pretty specialized environment. See all the concerns about global warming - mangle our environment just a relatively little bit and we're toast.
You're both humans with your own unique DNA. One of you is a lot younger than the other.
I wouldn't kill a thirty-year-old because they're doomed to get cancer, nor a one-year-old, nor a negative-six-month-old.
have you not been consuming the news from reputable sources and correct twitter opinions in the past few months?