If the Indians support it, than good for them.
On the subject, I actually have no ill-feelings for homosexuals and have made acquaintances here in NY that are gay and or bi.
If two individuals want to get together with mutual consent and engage in behavior, it is their matter.
As the comedian Bill Burr stated, now that gay couples can get married, let them also get divorced just to see how the other half lives.
Yet, we see that the gay rights movement in the U.S. gained rapid support after the Stonewall riots, political opportunity for the left to appear “liberal”-er (Clinton), and the advocacy that homosexuality is a right given by the same extension as Roe v. Wade (famous Supreme Court abortion case).
Most Americans were not in favor of gay rights up until a decade (maybe decade-and-a-half) ago. It has been a brilliant PR, marketing, and entertainment campaign by slowly introducing gay actors, comedians, football players, and others coming out in the public to showcase that the behavior is normal.
As someone prior mentioned, prior to 1973, the APA considered it a mental illness and prior to 1992, so did the WHO. The latter still affirms that the person is not confused about his or her sexual orientation but whishes it were different due to mental, psychological, and or behavioral disorders.
This is why I believe that subjective morality hurts a society because you do not have longstanding values. If yesterday homosexuality was considered wrong and today right, tomorrow it will be gender changes (not genetic; already happening) and other forms of obscene disorders. With professors like Peter Singer (Ivy-League) stating that beastiality is fine as long as there is mutual consent (?), the future looks for signs of consistency.
Of course, the argument from the other side must be given attention that society has evolved such as the issue with slavery. Yet slavery was an issue that was more concerning economics and hierarchy than sexual freedom. Not to mention that slavery was committed without the (mutual) consent of the slave while homosexuality today is.