We all know, as conservatives that a successful “Yes” vote in the coming plebiscite will involve as yet unknown erosions of freedoms, especially religious freedoms: http://www.theaustralian.com.au/news/inquirer/yes-side-in-marriage-debate-ignores-the-implications-for-freedoms/news-story/b119dbc7f7cad9f773f7f8ac7eef926d.
Once same sex marriage is in, a fanatical politically correct Labor will push things to the next level, with a LGBTI taxpayer funded watch dog, like the present system for racial thought control, which will view any debate as hate speech. Laws will be changed to make race hate encompass LGBTI issues. Then, they will move to the next level, and the level after that, and on and on, until traditionalists are crushed under the boot. It reminds me of the scene from the old Spider-Man 1 movie: https://www.youtube.com/watch?v=sAfxBXAQCZM.