They get their capital back sooner instead of more interest. 2) Be careful if this involves a senior or someone you could be seen “abusing” there isn’t a sane person in the country that would take 10% down, 3% interest, 30 year seller financing for 25% off list price. 

If you are having this much abuse, would expect that coin-operated types would always be broken by users trying to bypass coins.Even if you use a code-based keypad door access, what's to stop tenants from sharing it?

Most recent was two tenants arrested for abusing/killing their toddler.

For example, back in my "day job," there as a push against sexual harassment. 

People may be discriminated against on the basis of race, gender, age, religion, or sexual orientation - these are protected categories. 

That could be very sweet if it works.I agree that such loophole can lead to widespread abuse.

The lot next to mine is vacant and currently being abused by local dirt bikers as moto-cross track.

I own a home on this street, within about a block of one of the stops on this line, it is a bus rapid transit system that travels from downtown on the bay out to the beach.

This is the simplest method, but it also means your tenants are more likely to abuse the utilities by leaving windows open with the heat or A/C running, leaving lights on, ignoring the toilet that constantly flushes on its own, etc.3.

Your expectation of all to serve you, for free, is abusive and ridiculous.