Care to find where I said what we're doing is working well? And even though it's not the best, I can guarantee its better than Sander's ideas. All it takes is a little common sense to see his economic policies are dangerously dumb.
What we're doing IS working well. Of course it isn't perfect, and plenty of things can be done to improve the living situation for many people. But we are living longer than ever and more comfortably than ever. Pointing out that wages have stagnated since the 70s is not very instructive. You couldn't buy a pocket device for $100 in the 70s that allows you to communicate with people world wide in a million different ways, and gives you access to humanity's combined knowledge on demand. You couldn't go to a clothing shop and buy a wardrobe full of designer clothes for a couple of hundred bucks. You couldn't do countless things that you can do now for very little money. Why can't people see this simple fact is beyond me.
Things aren't perfect, nor will they ever be. But things have gotten better, and hopefully, will continue to get better. Utopia is for children.