I have 5 hunters and love it. I wish I had 5 locks, but everyone told me not to do it. I have 2 sets of pets, ferocity and tenacity. I take tenacity to do instances (gorillidan is too amazing) and ferocity for PVP (dash/dive). I do a mixture of quests and instances. I like both of them. The quests are for the rewards (pretty nice gear if you pick which ones you do) and instances to see content and challenge myself. I try to feign my hunters if poop hits the fan. If that doesn't work, I lay a slowing trap and run until the feign cooldown is done. I have only lost a hunter 3 times, all from ego. "Oh, sure, in my mail and huge hitpoints I can tank an elite my level for 15-20 secs until I get done with the other mobs, no need for a trap." /death /corpserun

I want to keep all hunters just for the challenge and fun (movement, overpowered DPS, AOE tanking, free deaths--3 pets can die and it costs me nothing, not even food). I just don't do content that is too hard for me. I don't feel bad, I will not need it when new quests/content in WotLK in a few weeks. Good luck to you.