hmm
I honestly cannot say that one could plan a future to support himself/herself with breeding. Not to say its impossible, but come on even Rich Z says he just *recently* quit his day job to deal with just reptiles, and that is many many many years after he began with them.
unless you have a huge amount of money to start with and buy animals that are in demand, but even then its probably not going to make you money. not enough to live on that is. its nearly impossible.....the costs of medical supplies, vet visits, starting up a large rodent colony, maintaining a large rodent colony, deli cups, cages, water dish, substrate, heating costs and supplies, and not to mention if you have a lot of animals you will need employees etc. It will take you years before money made from hatchlings turns into any sort of profit, because at first for many many years all the money from hatclings will go into supplies and breeding stock.
MHO
Bmm