other Leviticus quotes:
When a woman has a discharge, if her discharge in her body is blood, she shall continue in her menstrual impurity for seven days; and whoever touches her shall be unclean until evening.
Leviticus 15.19-24
You are to keep My statutes. You shall not breed together two kinds of your cattle; you shall not sow your field with two kinds of seed, nor wear a garment upon you of two kinds of material mixed together
Leviticus 19.19
You shall not round off the side-growth of your heads nor harm the edges of your beard
Leviticus 19.27
Anyone who blasphemes the name of the LORD must be put to death. The entire assembly must stone him.
Leviticus 24:16
So why follow one, when there are four others above that are not followed? And there are plenty of other rules in other books of the Bible which are also not followed, I have just picked four from the same book as the homosexuality quote comes from.