'Bluntly, the interesting people of working age will be at work in interesting jobs, not in soft play on Tuesday mornings.'
If you seriously believe this, then you have a very narrow view of life - arguably, interesting people don't do the 'obvious' thing and are secure enough not to define themselves by their work and (finances permitting) instead go with what they value most at specific points in their lives.
What makes a person interesting, isn't their job, it's the level of interest they have in the world around them!
So much of what we do for a living comes down to childhood opportunities, finances, life circumstances - I wouldn't judge a person as interesting or boring, based on decisions made off the back of those factors. One of the most interesting, funny, thoughtful and alive people I have ever known, worked on the railway fixing the track. And some of the most dull, have been those in 'interesting' careers.