The wahhabis (sect of Islam) wear their trousers above their ankles. I am not sure why but I  think they believe thats how the prophet used to wear it.\n  Most muslims prefer to wear their trousers in a normal way with the end of the trouser NOT touching the earth but just above 1 cm from the floor.\n  Reason1: The floor is full of garbage and dirt and they dont want to dirty their clothes. Some things are considered unpure and thus they dont wan t it to touch their clothes like urine.\n\n  reason 2: Respect. There is more respect to a person dressed appropriately  and not like a hooligan dragging his pants everywhere and sweeping the floor with his trousers. \n \n  Reason 3: Because they were their trouser at the wasit line and not below the buttocks.\n\n  Reason 4: Its believed that Gays during the time of Prophet Lut (Lot) used to wear their clothes dragging it on the floor (like the trousers). So muslims dont want to do it that way.\n\n  Reason 5: Take the reason of gateway above mine. \n         Thank yoou Gateway.