回复：90% of options expire worthlessly is a statistic

I was clearly told by the CBOE floor trader that the correct says should be "90% options which expire, expired worthless.". :)
Most of people choose to close the position before option expires.
I think buy or sell options has no right or wrong as long as it can bring you money. Understand options in and out is most important. Only professionals can make money out of the market consistantly.