Why is endorsing gay marriage/civil unions bad?

[Jay]

The issue is not just 'gay marriage', but the desire for the endorsement, approval, and celebration of their lifestyle by the community at large. For this reason, they will not stop once they have gay marriage but will seek to have the approval of any and all houses of worship. It will eventually be mandated that if you wish to perform marriage ceremonies for heterosexual couples, then you must also provide the same service for homosexual couples. This is already begun here in the States. Hutchinson, KS is proof of this. The homosexual lobby has recently stated that merely tolerating or approving of homosexuality is blatant homophobia.