Should I change the ATF on my Honda Civic?

I heard a lot of people say it is not a good thing to change the transmission fluid on a old car, especially if the fluid has never been changed. I have a 1990 Honda Civic auto with 122k miles, don't know if the fluid has ever been changed....Should I change the ATF? The shifting isn't smooth on my car. Why... show more I heard a lot of people say it is not a good thing to change the transmission fluid on a old car, especially if the fluid has never been changed. I have a 1990 Honda Civic auto with 122k miles, don't know if the fluid has ever been changed....Should I change the ATF? The shifting isn't smooth on my car. Why so many people say only use honda atf on hondas? The owner's manual only ask to use Dexron II,so I guess it is not necessary to use honda atf?
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