I am considering breeding my tortoises and possibly my Bp once each. I'm only considering doing so because I'm defaulting to assuming that I wont be able to rehome any offspring. If I cant rehome or sell any of them then I will just have larger collections of those species. Planning for the worst case scenario and using that as a basis seems reasonable.
I should mention that my tortoises are covered by CITES so anyone who legally wants to purchase one has to get paperwork showing they were bred in the country. If I do breed them then I'm providing a legal source of pets for other people and hopefully can reduce the number of animals being removed from the wild. This is an aspect about breeding that hasn't been mentioned yet.