Figures released by the Australian Bureau of Statistics have revealed that 27 per cent of men, aged between 20 and 34, are still living with their parents - which is double the proportion of women.
Social demographer Bernard Salt has said that the difference might be because men generally marry younger women.
But he claimed that the constant pampering of their mothers often make such men to have unrealistic expectations of their partners.
"Men are living at home well into their twenties because they get free meals, free board, free laundry, free access to the family car and you can have your girlfriend stay in your bedroom overnight, so why would you ever leave home?" News.com.au quoted Salt as saying.
"Plus the fact mum dotes on you and that leads to that we may well be raising this entire generation of men who are effectively mummie's boys. The problem being that when they go out and form a meaningful relationship they expect their girlfriend to pick up where mum left off," he added.
Earlier, men generally left home at 18 and were fending for themselves managing their own household and budgets.
"If you've got mummy picking up your dirty washing at 27 - you never actually learn those skills," he said.