Help needed please :) retired expats in Spain!

Hello,

I am trying to gather information on the positives and negatives of retiring to Spain for research on a project. Comments on reasons as to why you moved out there would particularly useful, considering anything from finances to family etc. Anything you can provide would be much appreciated. I am a university student and am gaining no profit from this it's just for my coursework :) sorry to mention this but a few other forums are very strict about users posting asking for answers in regards to research.

Thanks a lot,
Williams92