How many pets is too many pets?

I currently have 2 dogs, 1 leopard gecko, 1 crested gecko, 3 hermit , 5 tarantulas, and 1 scorpion. I am also planning on getting, when space, money, and time allow it: 1 blue tongue skink, 1 bearded dragon, 1 small tortoise (either a greek, russian, or hermann's), 1 or 2 red-eyed crocodile skinks, 2 or 3 dwarf sand geckos (steno stheno), 1 fire salamander, and 1 pacman frog, as well as a few more tarantulas and scorpions. I don't really plan on breeding any, just having them as pets. All my pets are very well looked after! But how many is too many?