Elton John posts heartfelt Instagram in support of same-sex marriage in Australia

Australia's marriage equality debate has sparked the attention of celebrities and major companies worldwide, including Ellen DeGeneres, Tim Cook and now, Sir Elton John.

Sir Elton is currently in Australia for his "Once in a Lifetime" tour, hitting six shows around the country.

Meanwhile, Australians are currently in the midst of a non-binding, non-compulsory nationwide survey asking the question: “Should the law be changed to allow same-sex couples to marry?” Parliament can make the change now, but before it does, it's taking the country's temperature on the matter.

The (true) "Rocket Man" took the opportunity to put his own experience with marriage equality forward on social media, supporting the "Yes" vote with a heartfelt Instagram and Facebook post featuring his husband, David Furnish.

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"Almost 24 years ago, I met the person with whom I could be fully myself," he posted. "When we married in 2014, it felt like that fact was accepted by the world. For David and I, being able to openly love and commit to one another, and for that to be recognised and celebrated is what makes life truly worth living."

"I love Australia. I love its spirit, its lack of pretence, its passion. I hope it can embrace the honesty and courage that seeks gay marriage as an expression not of desire but of love."

Australian postal surveys were sent out starting Sept. 12, and Australians will have until Nov. 7 to mail it back to the Australian Bureau of Statistics. Then, the survey results will be announced on Nov. 15, after which the issue will be voted upon in federal parliament.

The $122 million voluntary survey has been a point of controversy, with marriage equality supporters calling it a stalling tactic. Several polls have already found the majority of Australians are in favour of same-sex marriage.