My feelings are that if the individual/species is an inquisitive and active one,then yes handling is probably a good thing for them.
Otherwise the stress of boredom is worse than that of being picked up and handled occasionally.
I give my monitor PK mice so she doesn't risk being bitten but I tug-o-war with the mouse to give her a little excercise and stimulation...I really think she enjoys it. Occasionally I handfeed her crickets too,I think it helps to socialize her a bit because she is definitely calmer with me the more frequently I handle her.
If I don't handle her for a while she gets a bit wild and nippy and I don't think an aggressive animal is a happy one.
German Tour Guide: You vill find more on Germany's contributions to ze arts in ze pamphlets ve have provided.
Brian Griffin: Yeah, about your pamphlet... uh, I'm not seeing anything about German history between 1939 and 1945. There's just a big gap.