Recent polls show Indiana residents are evenly divided on legally allowing gay marriage. Most Hoosiers, though, oppose amending the state's constitution to ban it altogether.
This Hoosier tends to support the idea of civil unions, granting legal rights of inheritance, hospital visitation, etc. to homosexual couples. However, if gay marriage were to become the law of the land, I doubt that it would destroy heterosexual marriage, cause churches to be convicted of discrimination, turn everyone gay(when orientation is biologically inherent), or cause the sky to fall. As it stands, churches do not have to marry anyone they believe are out of step with their beliefs, and I would defend their right to marry (or in this case, refuse to marry) who they wish.
Social conservatives, however, aren't trying to criminalize adultery and fornication to "sanctify" marriage. When it comes to legislating religious beliefs, it is much easier to try to take a minority of Americans to task.