I have three males and two females. The two older males, who are fixed, are pretty independent. But my little Siamese male is so sweet! The two girls are mom and daughter and they're new to the household. Neither of them are snugglers yet!
It really depends on the personality of the individual cat. Please don't be afraid to adopt an adult cat! Many need homes and you will have a clear idea of their personalities which are fully formed. Pick them up and see how they react to you and your son. Good luck! Cats are great pets.