表优点的几个方面：

　　Equip sb. with sth.

　　Cost-efective

　　Give sb. a sense of independence.

　　Benefit the society as a whole.

　　Broaden their horizons. Have a broder view of life

　　The price is worth paying.

　　Not necessarily all bad

　　Work for the public good

　　表缺点的几个方面：

　　Time-consuming

　　Make no economic sense

　　Economically worthless

　　Out of date

　　A waste of time