It's not just about the homeless, although they are the most affected. The very idea of it is horrible. We are slowly turning our cities into giant torture champers where it's uncomfortable to sit, uncomfortable to stand, uncomfortable to lie down. Everything is covered in nubs and spikes and built at angles that force you to expend energy. You can't ever relax. It's like this new breed of shopping malls that have no clocks, no rubbish bins, no benches and no water fountains. You either have to be shopping or leaving. Eventually the only comfy place left will be at home.