I'm very happily employed anyway, and at no point in the 4 years since I quit LinkedIn have I struggled to find meaningful, well paid employment. If I had stayed on LinkedIn just maybe some amazing job offer would have appeared that otherwise hasn't - but I doubt it. For 8 years as a member of LinkedIn I never had one interesting conversation. And I could say "what if I moved to New York?" or "what if I learned to speak Spanish?" There's an opportunity cost to not doing those things as well.

I understand that some people can find value from LinkedIn, but I just don't feel that I'm one of them. I attend lots of meetups in London, and participate in online discussions, and that's good enough for me.