[دانه کولانه]

yes i saw them in some movies like fight club
using other's experiences can be very useful for example imagine there is a group which supports and discusses about adolescence's period's of children
one of good points is introducing wide range of probable problems and unexpected behaviors of youth by all members of that group.
as Maryam says , cultural problems may cause lack of participation
but i think this is not an individual problem , it is from basically structural cultural problem's of our sociaty , nobody likes to speak about the family's internal problems and arguments.

but i think there are some instances of such group in iran .
noghte sar e khat .