First: At what historical point did "moral" come to mean "chaste" and "virtuous" "sexually moral"? It seems that there was a time when it took quite a bit more to be moral than just to use one's naughty bits in the prescribed fashion. Indeed, it seems that sexual morality was but a rather uninteresting piece of the moral life.
In the same vein, we seem to be—at least by the BBC's lights—entering an era in which "ethical" means "having a small carbon footprint". How is it that the moral or ethical life—presumably an integrated life—has come to be so limited?
Second: Why or how exactly did it come to be that being economically or socially liberal meant that one had to support abortion on demand? There is no natural affinity between these two sets of beliefs, nor is it clear what other forms of sexual liberation really have to do with this.