*grin* I'm pretty sure everyone here will agree that they are good pets. It *is* afterall, a bearded dragon forum!!
I've had many pets over the years- cats, frogs, ball python, anoles, hermit crabs, fish, hamsters, mice, etc. And as far as non-furry animals, I'd agree that beardeds are my favourite. BUT they do (should) require a fair amount of time, I've found. Especially in the taming dept-- I've adopted beardies who were rarely handled and I'm sure as hatchlings and juvies they were sweet but by the time I got them, they were almost -mean-. Of course, it could've been that particular dragon's temperment, but I've had others who I noticed were not nearly as tame if they weren't given the proper attention consistently. Which only makes sense- most dragons have a calm personality, but if they're only handled every now and again, they may not be used to it and might freak out every time it happens.
I've also found that the bigger the tank/cage, the more content my dragons seem to be. (as older juvies and adults, of course)
Several people posted some great resource sites and also, if you search the forums you'll find the answers to many of the questions you asked. 

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0.2 cats (Pandora & Journey)
0.1 bearded dragon (Kleio)
0.0.1 green tree frog (Squishy)
0.0.2 fishes (namoli, Asana, Adagio)