It really annoys me that Boeing chose to option the RHS tiller on B737 aircraft. I'm inclined to assume that it wasn't Boeing's absolute decision to do so, but rather they were commercially persuaded to do so by a particular airline wanting to buy several hundred models of the type, and wanting to shave a few more shekels off the purchase price.
My airline inherted some of these models, and for type commonality has chosen to order all future 737s without RHS tillers, despite all other types in the airline being taxied by both pilots.
I find it insulting to the FOs and also problematic in that if they are seen as not fit to taxi they learn to act that way... They will daydream and let you taxi down the wrong taxiway. That is Human Factors 101.