You don't mention the fact it's completely unworkable mathematically. In the UK I believe it'd cost £240 billion a year. Where the hell would anyone be able to find that money from? (Tackling tax avoidance from Starbucks isn't a credible answer).
Just to put it in context, that's twice the entire NHS's budget, or 5 times our defence spending.
Just to put it in context, that's twice the entire NHS's budget, or 5 times our defence spending.