The question Wilber is posing is this: Do we want to grow or or do we want to stay stuck? Personally, I want to keep growing so choosing not to meditate is just not an option I want to consider.
If we - you and I - are to further the evolution of mankind, and not just reap the benefit of past humanity's struggles, if we are to contribute to evolution and not merely siphon it off, if we are to help the overcoming of our self-alienation from Spirit and not merely perpetuate it, then meditation - or a similar and truly contemplative practice - becomes an absolute ethical imperative, a new categorical imperative... Meditation is simply what an individual at this present stage of average-mode consciousness has to do in order to go beyond that stage in his or her own case.
-- Ken Wilber