I don't want to worry about when I can shift. Every mechanical system I've used I've timed my shifts to be not clunky. With the Alfine 8 I currently use, I backpedal a split second to shift. I do like the IGH ability to shift at stoplights or when coasting. Looking for the hassle-free operation of IGH and the smooth operation of IGH with ability to shift while pedalling, which electronic seems to offer.
Its likely the last bike I'll buy for 25yrs so I may as well go for the gold