The rights of humans are inalienable and come to exist as viability is attained in a pregnancy/gestation. Fertilization or manipulation/germination in a laboratory 'creates' nothing but a fertilized embryo with the potential of becoming human being.
Now, that's an opinion, one you won't find in any biology book, and you'll have to work hard to find it even in R v W, which has nothing to do with embryos outside the womb, since it only dealt with abortion.
As to those humans with less aggression and more devotion, I meet them every day.