No, liberals like to BELIEVE morality is ONLY about sex. It most certainly is not, although it's far easier to win that argument with them on that topic as long as they support positions that include bailing people out of their free sexual choices via nationalized healthcare and abortion. Abortion and euthanasia are both moral topics and yes, even war is because not all wars are just. Lying, cheating in business dealings, lack of self-control, coveting another person's things(DUmmies, wishing for the demise of the 'rich' would fall into this category
)etc--all moral issues. In fact it is hard to escape any situation where a call of judgement is made that morality of one kind or another does not figure in. Liberals, and even some conservatives, are the ones who focus heavily on this particular area and probably because the sexual has held fascination for human beings since the beginning of the time, but it certainly is not the be all and end all of morality.