Why switch to manual steering ?

I can understand all except "less crap to go wrong". My power steering and TTI's aren't a problem!

No fluid to check, no belts to throw, no hoses to replace.

At the same time, you really have to abuse/neglect power steering stuff for it to go bad. The P.S. on my '65 Valiant worked well enough for it being 45 years old, I never did anything to it and it looked like the P.O.s never did either. It needed a lash adjustment but that was it.