In far too many cases they are very unstable and create several layers of problems/chaos that tend to costs only you!

You will always want to rely on DCF analysis when the property’s income stream is unstable.

Her landlord wants to sell for the same reason - financial unstable HOA.These landlords who are selling now - taking advantage of the market and dumping what they consider worst of their portfolio.

my life is unstable still, I might lose my job and need what I have, so its not a good time for me, and I do not want to discuss my personal finances with you. 

1 - His main employer is not doing business which means his main source of funds to pay his rent is not available, and...s2 - with the ban on evictions due to the virus, his reason for #1 IS the virus, so if the government finally gets it together and attaches a qualifier to the ban, this guy is guaranteed to noe pay his rent.3 - The couple isn't married, so they could break up at any moment...and you would only have one tenant to supply your rent money.The income sources for this option are very unstable. 

I also prepare to accept below market rent for the first year, since I feel buying property and immediately increasing rent will cause unstableness, especially in current rental market plus my limited experience.

Don't bring up the deposit; if they ask, tell them you'll return everything minus repair costs and rent owed.Are the tenants unstable?

I love SEC 8, especially in a market like today where renters income can be unstable.

A looming foreclosure crisis, unstable economy, and an election are in the near future.On the other hand, I could refinance today and add $200/mo to my cashflow.

She is mentally unstable and usually stays barricaded in her room for weeks/months at a time.