I think there's a lot of misconception about the creative process and production. Personally I prefer being spontaneous however client might not have enough of that for the talent button. I've been known to spend 8 hours to get a vocalist to sing one song properly till they want to strangle me or their vocal chords fall out, and that's their own fault for not singing right in the first place.
The best gigs are the one's where they bring their own talent button with them, and then the issue is what to do with that much genius. Making genius sound like genius is supposed to is hard to do.
There are some genres though that require pure skill and repetition rather than being spontaneous. James Brown for instance would fine a band member for playing the wrong note...
It just depends on your approach, and who you are working with. And that generally alters all the time...
Sometimes I comp, sometimes I don't. Sometimes I purposely overwrite performances so I don't get too distracted. Sometimes I listen to the artist and give them everything they want. Sometimes I give them what they want but they just don't realise it yet...