For some of us, tinkering with the motors is as big a part of the hobby as building and flying, The satisfaction of plug and play electrics just isn't there.
Sort of like the difference between enjoying a real wood burning fire in your fireplace or having a DVD of a fire on your big screen TV. Sure the wood burning fireplace is old school and a lot more effort but it's worth the trouble.
Some look at electrics in wonder that anyone would enjoy something that removes so much of what we think makes the hobby enjoyable and challenging.