I have 14 dragons right now of all ages. Some are rescues with problems etc. I hatched 8 babies this year. They hatched on or about 8/8/07 from 2 females. My comments will be based on how I handle them. Adults are way easier to take care of but it's great to see the babies grow and they will be accustomed and friendly with you.
First off I have never been bitten by a dragon so I wouldn't worry about that. I have one that threatens but that's just because he was never handled by his previous ownwers.
I leave for work at 8 and return at about 6 or 6:15. I feed crickets at 7 before I leave, then put in a salad, then feed them crickets again at 6:30. Their lights come on at 6:15am and go off at 8:15 pm.
I think crickets are a hastle but a necessary evil with dragons especially babies and gravid females. Price wise they are the cheapest feeders. Adult males you can skip crickets all together and feed them superworms and salad with an occasional treat of some other live food if they like it. I never feed wax worms or meal worms to any of my dragons regardless of size. I breed my own silkworms, and have a dubia roach colony, they are a good staples and am working on breeding superworms. In my opinion, good adult dragon live food is silkworms, crickets, superworms, roaches, hornworms, and butterworms. I haven't had much luck with Phoenix worms. They are not well digested and are expensive for such a small food item.
My GF has a 3 year old girl. She was 2 last year. lol. I have her sit on the floor and she and the dragons are fine with each other. I have no worries that the dragons will hurt her, my concern is she may step on or injure the dragons if she is walking around etc. She is actually way better with the dragons than her mother. lol.
I think if they grow up being handled they actually like it and look forward to the interaction. The jury is still out on the one I have that was never handled. I have had him for 2 months and he still hates me although even he has his moments where I can pick him up and carry him around. But it's a far cry from the dragon that sleeps with me on the couch.
I love the babies. The downside for me is they just grow up too fast. The largest of my babies born 8/8 is now 18" and 290 grams. Oh well breeding season is coming around again soon. lol.