I disagree completely. I know just as many millennials who are uncomfortable with self-driving cars as I do baby-boomers. It is going to take quite a bit of testing and certification to get the first fully pilotless aircraft. I estimate it to be in the next 40-50 years. Airlines aren't going to park brand new 787s in 15 years and completely repurchase an incredibly more expensive airplane just because it would save them a few dollars per ticket.