Having markets open during particular hours is great. You can sheduale you other activities appropriately. Also, wifes and kids wont complain as much. :)
Because everyone has something else to do, not just trading.
Its also good to have Saturday and Sunday off.
29 y.o., Part time trading, part time learning
Started trading in Feb. 05
Started as active trader and witched to swing/short term trading in June/July.
Toronto Canada