Cuppa even if you assume $100 a week which I think is on the high side - it will be reducing over time due to increases in rent + plus the loss is also reduced through negative gearing. In all reality the actual loss at a guess would more likely be in the vicinity of $25k - which will more than payed back in the future.
"when you realise that the only winner in your deal was a bank (for collecting all that interest)... "
Don't care if the bank is a winner as well as they enable me to build wealth.