What you've written is the equivalent of the abused woman who stays with the abusive man because he'll change. 

I politely listen, sometimes offer that I am an Investor too, but hear my fair share of abuse that I need to lower the price, and should consider their Offer because there is no other agent and I can keep "both sides" - another ethics violation sigh ... 

Quote from @Samuel Mutschler: This is mental illness, substance abuse, or someone trying to get out of their lease.I would tell them the rental is unsafe and they should leave.

And we take a bus and see several properties with the builder. 

Denying application because of pet is not about discrimination (man they abused this word so much), it's about who pays for the cleanup cost.

The price assumes that you can eat all you want, but there're still some expectations of being reasonable and not abusing it.

Of course, some folks have abused that provision in the law.

Does the tenant expect crown molding and plush carpet for a high rent rate area or do you need to put in carpet that stands up to use and abuse??

We retain late fees when residents pay late not only because of additional work required (which may include verbal abuse from the resident for charging them the fee), but because it rarely has an impact on our client.If a resident pays late, we require the resident to pay with certified funds.

Upfront fees relative to the project and depending on the project are not abuse in my opinion.