Isn't the welfare in Sweden very good? Even if you don't work, you won't starve to death Why are there thieves?

Those countries in northern Europe have good welfare protection, such as Sweden, Norway and Finland. As long as they are full citizens, all aspects of protection are relatively perfect. But immigration is also very difficult. As for thieves, they are found all over the world. As long as people are greedy, they are prone to theft if conditions permit.