Sorry, I attribute your posting largely as ignorance, with a possible intention to cause disharmony by contributing controversial opinions.
Taken from Wikipedia -
In the Siriono culture of South America, a girl may marry before she reaches puberty. The Murnigin girl of Australia is likely to become a wife when her breasts first begin to develop and a boy might marry for the first time when his beard begins to appear. A Lepcha girl in Tibet is sometimes married at eight years of age, while boys are often married when they are 12 years old.
Boys marry at 15 years of age or less in 10 percent of 58 societies. Another 42 percent marry between 16 and 19 years of age. Thirty-eight percent are married in their twenties, and 10 percent marry when they are 30 years of age. (Ayer) But why are people pushing their children to marry at a young age across the cultures? Scientists and psychologists made a discovery in 1963 that in traditional societies, boys and girls have usually begun to do serious work well before they reach puberty. Girls are often doing womanly work at a certain age: cooking, weaving, gardening, taking care of their siblings when they are the earliest age of six to the age of nine even earlier at three or four. Boys on the other hand, learn how to farm, herd, and hunt before they reach manhood.
Mothers and Fathers attempt their children to choose their potential loved ones, but about 70% of their decisions are their parents. Parents who fail to marry a child at the proper age are thought to be neglecting their responsibilities, with their reputations suffered. Across cultures, females tend to be married earlier than males. Boys are married later than girls in 85 percent of 45 cultures.
Please do not mistake this as condoning of any child marriages involving a man of power and a helpless child forced into the situation by poverty or other reasons.
We all need to see beyond what we see in our own little worlds, either by personal choice or otherwise (because some people only see the things they want to see and hear the thing they only want to hear) and that the world does not revolve around this little island of Singapore only.
On the subject of terrorism, I honestly will ensure I do everything that needs to be done (within the law of course), if my fellow Singaporean like Mas Selamat Kastari is found guilty beyond doubt, that he has plans and is already in the process of creating mass destruction that'll probably hurt me, my loved ones. my friends and my fellow Singaporeans.
There is no doubt about that whatsoever.