I realize that most of the time buying in cash is ideal, but is there anything wrong with getting a 30 year mortgage and doing the BRRRR strategy?

Is it wrong to assume the “market is smart”, generally has access to all the same info I do (maybe more), and snatching all the good deals up?

Sometimes we've been able to convince the appraiser they were wrong (but usually only by a little), other times we've convinced the bank to get another appraisal, other times we've had to drop it, ate the appraisal cost and went to another bank to get another loan with another appraiser. 

I feel like I'm doing something wrong though because it seems way too easy.

There is nothing wrong with a condo as long as you are aware of the downside with the hoa fees and hoa rules (potential for them to convert to owner occupied only). 

They want to ensure that if something goes wrong early in the deal that you have enough to cover expenses.

I’m sick of being hosed by these guys and I expect every contractor to be wrong with their estimate.

Even when people made mistakes buying the wrong property hired the wrong people, analyze the deal incorrectly got saved because of the strength of the market. 

Am I looking at something the wrong way?  

@Andrew Taylor there is nothing wrong with your idea, but you have to get buy-in from your city council.