The 37-year-old striker, who will be paid A$2 million a year, also welcomed the huge weight of expectation on him to make a big impression in a country where football trails Australian rules football and the rugby codes in popularity.
"I know it is a young league but I know a lot of Italian, English, Greek and people from the former Yugoslavia emigrated to Australia," Del Piero, who arrived in Australia on Sunday, told his first news conference.
"Everyone here has football in their blood and we hope to awaken that and get them as passionate about football as they are about other sports."
Del Piero, who was released by Juventus in May after 19 seasons with the Turin club, said the decision to turn down offers from clubs in Europe and other parts of the world to come to Australia's A-League had been relatively simple.
"Most of my friends said, 'OK, you want to move but there are a lot of places closer,'" he said. "But I chose the best place for me. It was easy because of the project, it was very interesting for me.
"Sometimes I decide with my feelings but this decision was not just with my feelings but with my head."
Persuading his family was another matter and Del Piero said he had used Australia's distinctive fauna to sell the move to his son.
"Tobias is four-years-old and doesn't understand much so I told him we were going to a place like a zoo where we could see kangaroos," he joked.
EXPECTATION
Del Piero said he had not seen much of the A-League but was not daunted by the prospect of playing in intense heat.
"In Italy, we sometimes play in minus five, minus 10 degrees – I know that doesn't happen, which is good for me," he said, with another laugh.
The 91-cap international also deployed humour when discussing the controversial penalty awarded for a challenge on Fabio Grasso which gave 10-man Italy victory over Australia in the round of 16 at the 2006 World Cup.
"I talk to Fabio many times and he said he was really tired as it was the end of the extra time and that, or the wind, is probably why he went down," said Del Piero, who was a member of the team that went on to lift the World Cup.
"Joking aside, sometimes everything works for you and that's what happened in 2006. It was perfect for us."
Sydney FC were fifth in the A-League last season and knocked out of the post-season playoffs in the first round but will be expected to challenge for a third title this year with Del Piero on board.
"I know there's a lot of expectation and I love that," Del Piero said. "I played 19 years in Juve and in Juve you have to win every game, every year, and fortunately a lot of the time that happened.
"I have played to win all my life and I'm here to win, not pass my time. Victory is not something you achieve on paper, you have to do it and I'm here with that goal."
The eighth season of the league begins in early October with Del Piero likely to make his debut against Wellington Phoenix in New Zealand on October 6.
