The fact remains only 20,000 people under the age of 55 have died of Covid. 55 years or younge is 80% of the population in America.
Why are we destroying our society and way of life, when we could simply quarantine a fraction of the population until a vaccine comes out?
Just because I personally will likely be fine catching COVID doesn't mean I should be wanton with my actions that affect its spread. Such reasons include a personal responsibility to help prevent others from getting COVID, or how the strain on the medical system could affect my ability to access medical care for an unrelated issue (example, a car accident or the flu).
I am sympathetic to effects on the economy, schools, etc. of lockdowns. However, it seems that those that are against lockdowns are also against actions like mask wearing that would limit spread if more universally practiced.