If begpackers want to travel the world, that is fine but they should pay themselves. They should not ask the public to fund their lifestyles. There are plenty of genuinely needy people in Hong Kong who would benefit from a good meal or medical/dental treatment. I have seen a family with several young children on a couple of occasions. The children were rolling around in the dirt which probably is not too bad (but could be harmful) but they were sweltering in the heat.