I believe that all human beings have inherent rights to life, liberty and the pursuit of happiness (as a clever chap once wrote), and that all these rights include being able to make decisions in your own interests about your own body. Therefore I support the right of individuals to ingest whatever recreational drugs they like, to take whatever medical treatments they consider to be appropriate, and even to end their lives when they so choose. The only limitation I would place on individuals exercising these rights is that they must be capable of making an informed decision on their own behalf.
A woman who is pregnant and who is competent to make decisions is the only moral judge about what is in her own best interests about her body. Anyone else who thinks they have the right to overrule her decisions in this regard is the moral equivalent of a slave-owner, because to force someone to use their body against their will, and for a purpose she considers contrary to her best interests, is slavery. If you prohibit a woman from making the decision to terminate her pregnancy, you are in effect shackling her and forcing her to sacrifice her interests for yours (or your interpretation of your god's interests).
What about the argument that the fetus is also a human being with the right to life? I think the debate about whether the fetus is a human being or not is a red herring. The fetus is a stage in the development of a human being and so is the embryo and the zygote. The decision on when the product of human fertilisation and gestation becomes a human being is entirely an arbitrary one, on which even the major religions have found it difficult to agree (for example, the official Roman Catholic Church doctrine, on which even many Catholics disagree, is that the gametes are sacred human life and that 'spilling the seed' is, in effect, murder - which is why it opposes the use of condoms).
I have written before on how real, objectively-determined rights are never in conflict and that holds true for the abortion question. The fully-formed, fully-functioning, pregnant woman has all the inherent rights of a human being, and it is logically and morally nonsensical to claim that something within her body has separate rights that trump hers.