Monkeys can make great pets to have however be aware that monkeys can also become aggressive and attack you or your family or friends etc.
Monkeys are not usually the best pet especially for everyone since they're not really domesticated and they also tend to bite people with their 32 teeth which when they bite can be nasty.
I love monkeys myself but I'd rather not have one as a pet since I don't want the risk of getting attacked or getting my family attacked.