Would allowing nature to take its course and having them die really be that bad? It is better for society for them to not exist (in a peaceful manner ie not outright jailing/ worse) or for them to exist and harass innocent bystanders? Think about it this way, if they did not exist, and you had the power to create them, would would willingly/ purposefully create them? They are taking up resource that could be better spent else where such as investing in education or infrastructure or even tax breaks for the middle class