Longevity

I used to read of the peasants in the steppes of Russia subsisting on goat yogurt and living past the century mark. Now there is a research team in Belgium claiming something similar as a side effect of Metformin - a popular drug prescribed for stage 2 diabetes. They estimate such dosage to enable user to live to 120 years. But do I really want to live that long? By the year 2050 we will be dodging those driverless cars, with oceans lapping at the doorstep, Social Security exhausted and Donald Trump's grandson in the White House. No thanks - I'll pass!
tjs