You're argument is invalid, you are stating that the only choice we have is to end lock-down now and contemn 250,000 people to death. You're wrong, it is not the only option it is just the quickest and the worst. No one of any consequence without a vested interest agrees with that opinion.
and as above, you go out and infect your entire family and we can discuss it again, until then, as far as I'm concerned, the matters closed
Admittedly it's not ideal but my partner is not in the vulnerable group so we both fall in the 80% category. If I lived with somebody vulnerable I would entirely agree with you. I would not willingly go near anybody who is vulnerable. It is my choice and I am prepared to take the risk if it means the world returns to some semblence of normality. You have merit in much of what you say in fact it's the most realistic and sensible appoach but i do not think it pheasible, given the urgency and complexity.