This debate will never end.
6MT is a skill to be learned, but nobody is born driving automatics anyway. I won't pretend that DCT is hard to learn, but to get the most out of it, one needs to understand a manual anyway.
So you want to perfect your shifting, great. Those with DCT can perfect other driving skills. Or have other fun with the car since it's actually moving at a decent rate of speed.
I get it. I had a 6MT E46M for 6 years, my first cars were S2000s, etc. I will always be a fan of the 6MT and will always respect a 6MT car. I will never hate on someone's choice for getting a 6MT in this car, but this chassis/engine are not suited to the 6MT, IMO, for the reasons Eric points out.
But it's nonsense for 6MT owner to claim the DCT cars are just another automatic and to claim some superiority. I guess you'd pass on the PDK GT3s, Scuderias/Aperta, any Mac, etc.