Agreed, I only do it now on days I don't feel like jumping in and out of the shower to shampoo then DC.I only recently started doing it and dont think it is a requirement...more like a bonus. And I think if u are using a deep conditioner it can be used in place of deep conditioning after your wash instead of in addition to it.
No I dont. I do a deep condition treatment on dry hair before I wash so I dont really see the need for it. I try to keep my routine simple and when I was doing it I really did not see any difference in my hair.
That's exactly what a pre poo is.