It's simple, plentiful, cheap, and emissions are less harmful than a cow fart. 

You might want to read our series about “How to Screen a PMC Better than a Tenant”, since selecting the wrong PMC is usually more harmful than selecting a bad tenant: https://www.biggerpockets.com/member-blogs/3094/91877-how-to-screen-a-pmc-better-than-a-tenant-part-1-services-and-processes

I don't think there is any harm in continuing to meet with banks in hopes of finding one that says yes, but if your debt to income ratio is too high, are you prepared to do what it takes to lower this to give yourself an opportunity to buy another property? 

That "someone else" is *YOU* so if owners don't want to see a rise in dues and special assessments, they should be careful not to cause unnecessary harm to their units.  

Several times already, my realtor has called the seller or seller's realtor with our offer price instead of submitting an official offer. It seems like that could be good, in that you get an answer without having to d...

It can cause financial harm to the seller.

mid west rentals from turn key companies that work the top end of the market are doing quite well. its these bottom barrel outfits with low end rentals that continue to cause investors financial harm

But as a buyer I am entitled to protect my earnest money to the best of my abilities and so there is no harm in doing that.

If the contractor (or in this case the turnkey company) provides a complete breakdown, what harm does it do them?

In any case, if you think it is a meth-lab the right thing to do is go ahead and have it inspected so you do not harm others or yourself.