In my mind, they are very far apart. Really, one important reason I worry about a decline in religiosity (or the embrace of homosexual behavior) is that it's tied up with more acceptance of abortion. There seems to be a psychological bundle of Sexual Revolution/Secularism/Mass Abortion.More than just seems to be, there most certainly is.
As a secular homosexual, Mark is an outlier in his firm pro-life position. The Inductivist is spot on in assuming, as most readers probably do, that secularism, tolerance of abortion, and support for the loosening of sexual mores tend to travel together.