A pessimist would say: "nothing like comparing yourself to your peers who went into marketing straight after an MSc to doubt the value of spending nearly a decade in academia." Similarly, Science Magazine has a recent article on the price of doing a postdoc where they calculate that:
"On average, they give up about one-fifth of their earning potential in the first 15 years after finishing their doctorates—which, for those who end up in industry, amounts to $239,970."
Having spend 4 years in the US (3 years as postdoc and 1 year as non-TT faculty), I have definitely made economic sacrifices compared to peers who stayed in the homecountry, and especially to those who left academia after an Msc or Phd. Not just the difference in income between academia and outside (which by the way is a much larger difference in the US than in EU). But also think of moving costs that weren't compensated: moving back to the homecountry we were both postdocs again and the university compensated us for 500 euros total. The costs of moving an entire family across the Atlantic was at least 10 times and maybe 20 times that much. We spent a good portion of our savings on moving costs and I'm sure we're not the only academic family to do that. Also, not paying for retirement savings for 3 years, and having a tiny foreign retirement account that will cost about the sum of what is in there to move it here. I realize it is a privilege to be able to spend money on choosing a career that is not financially optimal and at the same time that means that academia might miss out on people who are not able to do that. But then again, shouldn't we all go to school for whatever job it is where you sell shady mortgages and get filthy rich? That's not what life is all about, is it?
I tend to be an optimist and I wonder if we're not missing the value of doing a post-doc here. Looking back, it was a great period of being able to focus solely on the scientific projects I was working on, without course work and the pressure to graduate that happens during a PhD and all the other stuff that comes with a more advanced scientific career either inside or outside academia. Also - to me at least -, it was a uniquely flexible time for having babies, being sleep deprived and pumping milk. Also, it was great to be able to live in a different country for a while. But I guess I could have done that while working for a company who would have paid for my moving expenses.
I'm not quite sure what the answer is here. I've asked before if you felt you spent too much time as a postdoc, but I guess the bigger dilemma here is how to deal with all these people that are in academic postdoc positions without the prospect of all landing permanent positions...? And what is the value of doing a postdoc if afterwards you leave academia?