If I didn't have a shower at work I could see riding an e-bike as a commuter. However I do have a shower at work - as well as at home, so I much prefer riding as hard as I can, getting 100% of my power from my legs. This is good fitness for me, and it allows me to eat more food, which is nice. We'll see if I change my tune when I get old(er).
I do see quite a few e-bikes on the MUPs around here, and am slightly annoyed by them, but I should probably give them more slack than I do.