I have a collection that I am just managing. I have dart frogs mostly, but also a not insignificant number of other herps (axies, geckos, chameleons, assorted frogs and toads) and mammals (rats, mice, dogs). I used to work at a pet store and built up my collection over time. I knew what I was getting into with each addition. However, I spend a lot more time raising or preparing food items, especially fruit flies (I am up to 24 large cultures per week), than daily maintanance. That's really saying something. I have daily and weekly checklists to make sure everybody gets the care they need. Things are going well and many critters are reproducing. However, my enthusiasm for getting more animals, other than mates for existing ones, is minimal.
Fortunately, my other half loves the animals... but now he has "the bug" and wants to get more. I basically am drawing a line at existing animals unless he does a reasonable share of the work. So far, all he does is dog stuff and misting... sometimes
I work full time and I now have very little time that is not devoted to my job or my animals. I shouldered the resposibility for all current critters, but I am not going to dig a grave for my sanity or my "babies" by getting any more and exceeding my abilities.
By the way, if you keep darts, please respond to my post in the Other Amphibs section