I live in Canada, But I hate the Moral decay. I hold the law of G-D, precious... But my nation has allowed same sex marriage, I fear for my family and friends. Shall we become like Sodom, it would be just for G-d to do so. What should I do?

Your moral outrage is commendable. Let your own actions, as you build a moral family of your own, be an example to others who will come to admire your ethical sense and behavior. As citizens of a democratic country, you and others who agree with you can and should use your political power to influence legislation and your influence to change cultural norms.