It seems that the obvious escapes some folks when hysteria sets in. The reason for starting with seniors is that they are the ones that are primarily filling the hospitals and they are the ones most likely to perish from the virus. I know of at least 12 young folks that have had covid and survived it, mostly with symptoms that lasted about three days. Less trouble than the flu. It is the seniors that suffer the most, so it is most dangerous to them. You will see that many medical staff are passing on the vaccine, probably because they know they are in the younger group that will survive it easily. Just my opinion.
Of course, there is always the argument that by giving it to everyone else BEFORE the seniors would result in a new way to save Social Security......