More Aussies than ever before are avoiding the major city centres, with nearly 20 per cent saying they avoid the CBD altogether, a new study claims.Around 40 per cent of Australians said they visit the CBD for things like shopping, dining or other activities less than once a month, with one in five refusing to go at all, a study from Square claims.Using transaction data from 2019 to the end of last year, it found residents of Sydney and Melbourne