Darkrp will always be mixed. There will be under the ages of 13, and those under 18 to 18+. It's a common game because it's a sandbox and basically a engine at people's hands. You can't expect much from most servers but probably can find Whitelist communites I think there are some servers that have serious and good RP. But sadly the most servers are, as you said, very childish and yes... bad in roleplaying.3