This is a mistake because tenants will try to distract you from finding things or they will argue with you about responsibility.

I'd like to, just get distracted.

It would distract you from your focus of investing.3.

The "thrill" of expansion isn't worth the loss of distraction.Good luck “The thrill of expansion isn’t worth the loss of distraction”.... wow.

There seem like boundless niches to focus on (or get distracted by) when getting started in RE investing, but the most integral skill seems to be finding deals.

The real world is hard, the system is set up to distract you with shiny items, false information, and blame game. 

Furthermore, a buyer entering into a deal with equity already established is much more probably to overlook any cosmetic distractions that may otherwise be considered to cumbersome or just plain not interested in engaging in.

They say you should be close to your properties to handle "the problems" but I would argue the complete opposite - that is a distraction that takes you away from being an investor. 

I would not live with them if they become a distraction to you.

This way you can get everyone interested through the property in a two hour window, while minimizing distractions for the owner of the property.