Linda, the 'children' of the site are often those who are over twenty, and should know better. If you spend any actual amount of time sitting watching chat and reading forums you'll realize that many people on this site are here just "For entertainment purposes only" as the site reads at the bottom of the page if you look.
These 'children' are using the site for entertainment purposes. I understand that you wish to gain more knowledge and learn more, but that said, this site really isn't made for that. Many of those here take this site as a joke and take magick in general as a joke. It's bound to happen as anyone in the world can gain access here. There is no 'test' to see how serious someone is before they gain access to the site. All it takes is an email.
If you can't handle that there are some non-serious individuals on the site, then you can leave. I know that sounds harsh, but it's the truth. Any real practitioner realizes that people will take their practices as jokes and as fun and games, but that doesn't stop them from learning, nor practicing.
I would also like to agree with Nouveau that there are many younger generation people on this site who are serious. I can name off at least four people under twenty that are serious that I know personally.
So please, before you go on a rant that there are too many 'kids' on this site, please remember that some of us 'kids' are actually more mature than some of you 'adults'.