Does a US Citizen Born in Spain Qualify for Spanish Citizenship?

Thanks for taking the time to read my message. I am not sure if this will help anyone else or if anyone before has inquired about the same topic.

As to my question, here are my particulars:

I was born in Spain in 1979 and was raised thier for three years.
My parents were and are both US citizens.
Niether parent is of Spanish origin.
I have not returned to spain since 1983 (when I first left)

I believe that there is no right of birth for indiviuals born in Spain (of other nationalities), however, I saw a recent post that referenced that citizenship could be acquired after one year (for children I assume). However, does the fact that I was born a spain and resided there for three years have a positive effect on an application for citizenship? Also, if anyone has particulars of where to do more research or a quick answer, it would be appreciated.

Ohh, I was thinking abouth moving to Spain for about two years and would not mind the advantages (and disadvantages) of being a dual US/Spainish citizen.

Thanks,
Dave