Should Singapore legalise homosexual

The article that i read is "decriminalising homosexual acts would be an error".
The Home Affairs Ministry has indicated that section S377A of the Penal Code will be retained. S377A prohibits the commisson of gross indecency by one male person with another male person. However, opinions have been expressed that S377A may be unconstitutional because it discriminates against homosexual sex and not oral and anal sex committed by heterosexual or what we called the lesbians.
There are both advantages and disadvantages if homosexual is legalised. The disadvantages are more than the advantages. The disadvantages are that it is known medical fact that homosexual intercourse or sodomy is an inherently unhealthy act that carries higher risks of a number of sexually transmitted infections and that an active homosexual agenda has endangered clashes with fundamental liberties such as free speech and religious liberty.
In my opinion, i think that we should not legalise homosexual. It is not because i discriminate homosexual but i feel that legalising homosexual will bring many unneccessary and bad influence to the society. If homosexual is legalised, homosexuals must then be allowed to marry someone of the same sex and be given the benefits of marriage such as tax benefits and adoption of children. This will lead to greater number of sexually transmitted infections. Not only that, once homosexual is legalised,there will be demand for heterosexual to be legalised too. Homosexuality is offensive to the majority of citizens. Legalising homosexual would be divisive as Singapore is a multireligious and multiracial community.
Hence, i feel that legalising homosexual is not a right move in Singapore.