"I have seen too many players go back home and it has not worked out," Schwarzer told Football+magazine.
"The biggest example is John Aloisi, and how he was treated so badly by people. You are up there to be shot down very, very quickly.
"I don't want to give anyone the opportunity to do that to me."
The 39 year old believes he can still operate at the top level for some time yet.
"The truth is returning from Europe is a step down, and I don't want to be in that situation," he added.