There are people who say what consenting adults do in private should not be covered by law. This is mainly in reference to Section 377 of IPC which is under litigation in Supreme Court.
By that logic prostitution, sale and purchase of narcotics and psychotropic substances and illicit liquor, corruption, polygamy, transmission of pornographic material and many others matters that take place between consulting adults will be out of the scope of law. Drug traffickers can claim they have right to life and liberty to sell heroin, marijuana and such things to consenting adults in private and they have right to equality. The state will have no right to legislate on marriage, divorce, alimony and child custody. Also concubinage, live-in relationship and palimony will be out of the legal purview.