Yes, there are many out there that do it and nothing bad has ever happened, and I say kudos to that, I just would never do that.

Next time it is that bad, have the tenant call the police.

I think you are letting your feelings get in the way of making bad business decisions.

If so and the monthly payment isn't too bad then you're still moving the needle forward if your main goal is wealth generation and not just cash flow. 

Sorry my bad.

I am sure there are good and bad locations in Boston. 

Every property comes with its own characteristics and challenges. we have sold to hundreds of investors by now and there are some that had a bad experience as far as the property goes but theres also tons who havent had any issues.

At times, the seller may back out, we may uncover bad things about the property during the due diligence period which will cause us to back out of the deal, or financing may fall through.What makes it even worse, we, as investors, may incur some soft costs (costs incurred prior to closing) which end up being sunk costs.However, as investors, we are relentless in our pursuit of cash-flow.

Bad news you may also have to cover your own commissions. 

Almost every partnership fails and many end like a bad divorce.