To me it seems like investor psychology...it will be much more likely to stick in the mind of a seller more than just a letter by itself...Would others care to share their experience if you've done this, and for those who haven't, what do you think about it? 

Sometimes playing along with someone's psychological weakness (like that need for power) can be a strategic decision.

I'm interested in the psychology of investors who think our interests are not aligned with theirs when it comes to turnover.  

It's a psychological issue for many - you just need to do what's best for you.If you do decide to go down this route, it's just like any piece of residential real estate.

More than anything this is a psychological thing.

Is it worth it (psychologically and physically) to hang on to this loser property?

The GC strategy has a psychological aspect too.

If you are confident the types of properties you want exist then the 45 day period is really more of a psychological impediment rather than an actual barrier.

just a little reciprocation psychology. 

I originally went to college for Psychology but never finished, then I took a two year massage therapy program and I currently do nothing within either field.