Gay Marriage: People have the right to choose their sexual orientation. People should not be discriminated against due to the wa they choose to live their lives.
I am unclear on your position on the issue from this statement. People have the right to choose their orientation? Any gay person will tell you it's not a "choice". The choice made by those in the gay community is a choice to be who they are. Homophobes will argue that there is a choice involved, that we could make a decision to be straight.
More to the point, do you therefore support the legalisation of gay marriage?