Most of us feel a bit down sometimes. Those of us lucky enough to have a job and a family normally soon get over it, largely because there are things to do. Personally I might take a longish walk or some other exercise for a few days as well. And then you think about all those people who have bigger challenges than you have, and the world doesn't seem so bad, after all.
What we need is a purpose in life, and that is why people need jobs. I visited northern Vancouver Island about 15 years ago, and the aboriginal, "Indian" people there looked clinically depressed. They had a big drink problem. The state looked after them very well on their reservations and they didn't need to work much. No-doubt when they wandered the prairie in their tribes all those years before, a few people felt a bit depressed sometimes, but tomorrow they had to catch their food for their family, and the Moccasins needed to be stitched for the winter, they would have a bit of a grumble, and then they would get on with life.
Most people feel best in the long run when they are confronted with the realities of life. What governments do is take our money from us in the form of taxes and duties and give it back in a way that deadens the impact of our laziness or folly. So what we get are more lazy and foolish people, living off the state, feeling unhappy and depressed. They eventually become low level clinically depressed, a statistic in the dependency culture, and a burden on the medical support services that this country provides for people who have real problems and who must receive support. They also cost a lot of money to look after so we have to ask the taxpayer for even more money. It’s a vicious circle.