The first reason is lacking. Robots will replace them and jobs will decrease, but that will increase the number of jobs with robots and fruit. The 2nd and 3rd grounds are the same. Robots are faster and more accurate than humans, so they will be more efficient and useful both socially and economically. It is true that the initial cost is high. But for the first time, will you miss the future? It's going to be hard at the initial cost right now, but if you're looking far away, you'll certainly get more benefits.