Personally, when ever my back is against a pile of rocks is when I decide to try out the forklift. When ever I have a pile of schlep that I've been doing manually (or when I see that I will have to do it manually) I usually opt for the forklift if I can see it will reduce that schlep and net me some time.

The payoff can't be a thin margin either. If doing it manually vs learning a tool will save me a few hours total, It's not worth it. However if writing a script will save me days on end in the long run I'll think about it.