I am first time looking to buy a residential condo in Orenco station area Hillsboro for $290K, which rents for $1700. But when i put in the numbers, the online calculator shows negative cash flow. I was thinking that if someone else pays down my mortgage, it should always be no brainer but seems like people in this forum always insist on positive cash flow. I have a great paying full time job which i hope to continue another 20 years. Then why is it a bad idea to buy property with negative cash flow. 

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