Took both of my kids backpacking when they were teens; it never really took (though my son likes to kayak-camp; we still occasionally go to Isle Royale: he paddles, I hike, and we meet up in the evening.)

I'm now looking forward to taking my two granddaughters camping this summer, and exposing them to backpacking in a year or two (they're 9 and 6; not quite big enough yet, but getting close.)

For what it's worth: empty-nesting is vastly underrated.