Second, you can't earn a living if you're dead, which is why quarantine is essential. Most countries don't have the health system to support multiple gravely ill people at the same time, which is where the quarantine comes in. No one says it's ideal but it's what you do when you're forced between amputating your hand so the whole body doesn't die. Mostly no one is enjoying this.
recent antibody studies seem to support that view. take spain for example:
https://www.vox.com/2020/5/16/21259492/covid-antibodies-spain-serology-study-coronavirus-immunity27,563 deaths but only 5% of the population has been infected. at 100% infection, you would then expect ~1.2% of the population (~560k) to die. and i think reasonable people will agree that overwhelming the health care system in that scenario would greatly worsen the death toll, perhaps exponentially so.
sadly we are
nowhere near herd immunity. the outbreak we saw is
tiny compared to how bad it could have gotten unchecked---or how bad it could still get in a second wave. going forward, quarantines are still the only realistic solution, and i expect we will continue seeing them implemented and relaxed repeatedly for months and probably years to come.