No argument there in regard to morals. It becomes murky on deciding whose Christian morals as it is not absolute, otherwise there would not be a huge divide in the country regarding reproductive care.
the position of the church is extremely well defined on most things...
the issue is two fold when it comes to abortion..
no one "church" represents all of Christianity (no different than there are multiple sects in Islam.. several sects of Judiasm.. multiple sects of Hinduism, etc..).. different Christian churches may have different positions on different things... although abortion isnt going to be dramatically "different" in most cases.. only fringe element churches will have a different stance.. core protestant doctrines, Catholics, Episcopalians, etc.. will all be very similar)..
and then you have the "people" factor..
I think you'd find that a significant number of people (perhaps the majority) that proclaim a Christian faith, are not actual practitioners of that proclaimed faith.. they may show up for Mass/Church/etc on Christmas, Easter, and Mothers Day.. and occasionally when things get squirrely in their lives, pray.. but they dont live by the standard of the church or even make an attempt to follow the basic tenants presented in the bible (I'd guess many dont even know what those tenants are, much less attempt to practice them).. religion and faith are for a large number of people a matter of convenience rather than a matter of actual core beliefs and values.. they willfully do whatever it is they want to do.. whether it is commit adultery, act dishonestly, lie, manipulate, or even abort babies.. knowing full well that these are not representative of the ethics (rules) or morals (understanding of right v wrong) established by the church.. with no repentance.. or desire to correct a sin/mistake once it has occurred.. their stated "faith" is not real..
this doesnt necessarily make all of them "bad" people per se (some obviously are)... but followers of "Christ" they clearly are not..
Which really isnt much different than Islam, or most of the worlds other major religions...
Its amazing the number of muslims I know that are "devout" whenever in the presence of other muslims.. but will order a bacon sandwich, drink a fifth of scotch and chase hookers the moment they are no longer in plain view of other muslims..
my hindu neighbor tells me very straight up "Im a terrible Indian, and even worse Hindu... " (I wont get into the details of how he claims a specific faith, but very intentionally doesnt follow core requirements of that faith.. which really doesnt have a lot of requirements compared to others.. because he simply doesnt want to.. he just picks and choses what he wants to do... and acknowledges he is "bad" but wont do the other things.... I will say we have had a few funny, spirited, and very deep thought and focused conversations about it though.. hes actually a really great neighbor and a "good" guy... just clearly not a faithful Hindu.. even though he will tell you he is..)...
thats not to discount the faithful in any religion.. they certainly exist..
they almost are never the majority however..