I asked for a contract contingent upon that tenant being out of the unit by closing, but they wouldn't go for it.Are these irrational concerns??  

Don't think there is bubble too, don't see irrational exuberance yet.

Sure, whatever a property sells for on the open market is "market price" at that moment, however markets can also certainly become completely irrational.

Sure the 3-5 year projection of a high IRR at the time of the sale sounds great but I don't know what 3-5 years will look like so I am not going to bank on appreciation as my exit strategy.

You can also ask an attorney to draw up a "partial release of lien" and see if that satisfies the mortgage company.FWIW--mortgage companies can be very difficult (and irrational by virtue of their convoluted bureaucracy) on these matters.

Here are some things I see as potential areas:- Crypto's irrational market cap.

That's just plain irrational.   

I agree with your wife, stick with the plan - the fear is irrational and exaturated:- We know from 1980, 1981, 1991 and 2001 that real estate does very well in times of econmoic recession. 2008 was the only exception, but it was also a housing and mortgage bubble.

Sometimes I still feel what I did was irrational.

Fear is a very powerful emotion that wears many different masks and often leads to aggressive, sometimes irrational and anti-social behavior.You mentioned empathy and said...- "What if I knocked on your door during dinner or showed up to your work in the middle of the day in order to sell you something?