The Prime Directive is what Starfleet or the Federation drives in moving forward in exploration. My own Character, while a Klingon by blood, his Scientifical mind and love for it keeps himself busy with the PD. Last mission with the Za, it was my character that question the morale of helping out The Deep with their illness due that they just met with warp engines and already in the search to get help. In the end he helped them out, but it was fun to see it develop.
I don't mind getting to be put onto a moral choices path again when exploring the galaxy again.