I'm not going to go point by point because it is pointless since you and I are at far opposite ends of the opinion spectrum. You don't get to decide what "living life" means to me. To me, things like WDW are important to actually living my life. Staying alive and only doing essential activities is not living.
I realize the number is very large, but even if every single person in the US was infected (which isn't possible because herd immunity would happen at some point), somewhere around 0.2% of the population would die from it and maybe another 0.2% would die because they wouldn't be able to get needed medical care in the short term while this happened which would be over the course of 2-3 months. While 0.4% of 330+ million people is a lot, even doing absolutely nothing, well over 99% of the population would be "protected."
You contradict yourself when you say that all COVID deaths are preventable but that you aren't talking about total lockdowns. If you don't have total lockdowns, there will still be plenty of deaths and therefore not nearly all of them are preventable.
To me, and even others that disagree with me on a lot of this topic, "essential activities only" and "lockdowns" are not very different from each other. The former may not require me to stay locked in my home but it is still locking down my life.
Realistically, my life span is another 40 years or so (I'm 45) and who knows how many of those years will be "good years" where I am physically and mentally capable of doing the things I enjoy like going to WDW or dining out. I am not willing to waste a good percentage of the rest of my life by voluntarily not doing things I enjoy "for the greater good." Even waiting for vaccine distribution is still several months best case. 6 months is over 1% of my remaining likely "good" life span.
I don't have an issue doing them with social distancing protocols and will even wear a face covering to do them but what you suggest I will not do voluntarily.