For me clubs are exclusive and an adult/grown up environment. Adding kids into the mixture dilutes the exclusitivity.
If kids are well behaved, like my previous visit to the club lounge at CP Manila then I don't have a problem, despite the dilution.
If kids are noisy, hey that's not what I paid for. Ill take it up with the management. (unless it was free)
If adults are noisy, then its just unlucky.
Though, I expect that "higher tier" clubs like IC Hong Kong, Bali & Danang Sun are more strict and exercise more control to maintain the club exclusitivity.