I don't have any personal problem with breeding orangs in captivity, I just don't understand why a rescue sanctuary is doing so. Unless MW wants to change its remit...
I too am rather perplexed at Monkeyworld's position over Orangutans. Unlike the chimpanzees, they seem to be actively encouraging breeding, but is this in order to repatriate them? It would seem doubly difficult (impossible?), and more expensive, to repatriate Orangutans born in the Uk back to Borneo than from within S.E Asia... I can't see any other reason for them otherwise to promote breeding- are they now part of the EEP programme for this species I wonder?
I believe they are now also acting as a 'nursery school' for the EEP for rearing/socialising infant orangutans that have had to be handraised.