i agree with you about owners dont know what they are getting themselves into when they buy a monkey and many are mistreated i see this all the time.
they are very hard animals to look after properly. i myself have done many years research and have kept them for about 8 years now ive still loads to learn ill admit that lol.
all my primates are kept in family groups in large enclosures and all have the proper diet,heating,uv light etc and are happy healthy and breeding every year, i have all the correct paper work and insurances need to keep them (i dont sell them) i even have the local zoo vet on speed dial
as for my lemur, ive wanted one for years and came across her she was rejected at birth so i reared her, she is now a year old she goes everywhere with me my family have also bonded with her and she just thinks shes one of the family (spoilt rotten so she is) she is sitting beside me as im typing this, love her to bits