But it may be the only practical solution. - Those billions are busy doing other things. There is a time problem. - Even families don't care enough to visit t

But it may be the only practical solution. - Those billions are busy doing other things. There is a time problem. - Even families don't care enough to visit their kids and elderly parents, so there isn't a lot of willingness to take significant action. There is a what people are willing to pay (in terms of time, money, and/or resources) problem. - The scale of the problem is enormous and humans don't scale. Are there even enough sociable people you could hire in the USA for this?