Flamebait. Some technologies are better hits than others, and anecdotes about can openers and books don't seem like enough to generalize to the statement "Technology for the sake of technology is a waste of time", which I personally disagree with.

My own anecdote about can openers: I use an old-fashioned one, though my friend's little old grandma has a cool electric one under which she just has to hold the can while it magnetizes the top and cuts it off. She could probably use the old-fashioned can opener, but arthritis is still annoying.