I have to disagree on the premise, commercial and product work is by nature a layer oriented task much of the time. on the contrary much of the time weddings and portraits look worse when someone photoshops the heck out of them.
No, I dont need to use layers to adjust my portraits. I get close enough to the way I want in the setup of the shot.
(unless I need to clone something )
I might have to pull up 5 shots out of
700 keepers to clone something.
If I am playing with layers for portraits or wedding shots then I am doing something wrong, thats my view for myself, I need to be spending that time marketing and making contacts.
Youll never make any money per dollar
pulling up layers for all your shots of a wedding. unless you charge 30K per wedding !!!
Im not a big time wedding look actions user, I make my own very detailed and intricate develop settings and presets in lightroom and I use those.
If it works for you, thats awesome, but I dont need them for 98% of the weddings and portraits I shoot.
whatever works for you, theres no right or wrong, just sharing. I like to keep things pretty darn simple...