Caffeine isn't the issue, the massive stress of modern life and people having to work stupid hours is what will finish people off
People work less hours now than they used to. We have more free time as well, the big difference is we now sit at home in front of the TV rather than go out.
EDIT: http://personal.lse.ac.uk/minns/Huberman_Minns_EEH_2007.pdf
Specifically page 542, 548 and 549
Just because ideologically it's "true" doesn't mean it is actually true. Although I admit it does end in 2000, perhaps we have had a significant increase in working hours since then, however I doubt it. I'd also wager stresses of work are much less than 50 years ago, where more people were just surviving.
EDIT 2: http://www.bbc.co.uk/news/business-16082186 Actually, no rise at all since 2000...
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