My big switch on consultation time: waste or must-have?

I used to think spending time on consultations was a drag, so I'd keep them super short. Like, I'd just ask what number they wanted and go for it, lol. But after a few haircuts where the person left unhappy, I started doing longer chats before the cut. Now, I see it helps avoid mix-ups and makes the whole experience better. Some barbers argue that it eats into appointment slots and isn't always needed. Others, like me now, say it's key for good results and happy customers. Where do you stand on this? Do you keep consultations quick or take your time?