when you say machines are going to take over the jobs, yes maybe the ones today but that's because we're becoming more productive and as humans advance new industries start to form. Those who anticipate where the new demand will be are the ones who start it off, the Bill Gates and Steve Jobs of the world, extraordinary humans unlike you and I, so just because you can't think of where the jobs are gonna come from in the future doesn't mean there aren't gonna be any because if you did know where the jobs were gonna come from you'd probably become very rich.
There are no doubts new industries will appear and new jobs created, but the problem is the number of jobs created is less than destroyed. This trend become very clear now!
Maybe another part of the problem is that we have totally incompetent government driving the economy into self destruct mode by borrowing, spending and printing excessively, destroying the incentive to work with welfare programmes and excessive taxation, destroying the competitiveness of a markets with overregulation, creating a generation of sheep with government schools and more welfare programmes.