It is a human, not some parasite disease. To remove it would be to dash that exact sequence of DNA from all of history and the universe.
Not at all. My logic applies to only actions taken to create life. I’ll address sex before marriage first. Sex is needed to keep the species alive, that is really what it boils down to, marriage is just a stabilizer so the two parties have fiscal and social reasons to remain with their partner and child. I am not coming from the Christian standpoint, as I am an atheist; meaning marriage is a pretty outdated and in-need of updating concept in my eyes. Next point, polygamy. I don’t see how my argument addresses this, polygamy has nothing to do with physically removing unique individuals from existence, it actually often produces more than you would think possible. Now condoms (and I’ll throw birth control in general in to this) is a pretty damn good argument on your part, however using condoms does not destroy the unique DNA nor does this dehumanize the action of love and sex as it still keeps the emotional and physical connection between the two parties.
What I meant by abortion dehumanizing the most human things we have, love and sex, is that once a man inseminates a woman, they have taken action to create life; however once you squash out that life, that unique individual, you are dehumanizing the result of love and sex.