Indeed, hosting guests from all over the world is very exciting and interesting, but it is also a great blessing. Hosting guests will allow you to be more cultured, it'll help you understand the problems of the world and how to address them amicably. It'll make you feel content.
Hosting guests is essentially the same thing as traveling around the world, but without ever leaving your home. Guests are mothers, fathers, brothers and sisters, traveling nurses, artists, military personnel, doctors, actors and actresses, musicians, and a whole slew of other wonderful people who just need a comfortable and inviting place to lay their heads.
Most of them are very simple in their needs, with the occasional challenge, as it should be, life. And they are generally very nice and communicative. Give them a memorable experience and you'll feel very humbled, no doubt.