If you look at the purported dangers of salt or fat, there is no consensus of support in scientific literature. So I would ask first: 'Is it possible to have an informed government that actually follows the science?' From what I've seen, it's not likely.
It's about mass immigration at a time when 21% of young people can't find work. It's about giving £50 million a day to the EU when the public finances are under great strain.
Every pessimist who ever lived has been buried in an unmarked grave. Tomorrow has always been better than today, and it always will be.

