Why are tarantulas good pets?

People would buy a pet tarantula just for the fun of it. It's like, why would you buy a dog? Because they are sweet and good companions. Why would you buy a tarantula? Because they could be entertaining to watch! Like buying a fish! Fish don't do anything! They are just fun to look at!

If you really were asking why people ought to buy tarantulas, then there are two kinds of answers:

(1) If you went out and caught your own you might capture one that is an endangered species. If you were outside of the U.S. then when you tried to bring it home with you it might get quarantined or you might get put in jail for having an endangered species in captivity. Even if it were not a member of an endagered species, it might be some kind of tarantula that just doesn't tolerate captivity well, or one that has the kind of venom that can put you to bed for a week. Either you, the tarantula, or even both of you could get hurt.

(2) If you buy a tarantula from a reputable dealer, you will get one that is healthy, that is the result of a captive breeding program, that probably is disease free and otherwise healthy, that is identified correctly as to genus and species, and that comes with care instructions that will let you give your new pet a good home. Nobody will be likely to get hurt.