Just my opinion, but if I were asked in a reasonably curious or polite manner, I would not be offended by the question. I mean I haven't left yet and people are asking me why. :)
I was raised LDS and am not religious these days. I am interested in world cultures and histories, and that interest is behind my choice to walk this year (le puy to sjpdp or so). I will go to Mass and visit churches, but mostly as an observer.
I have known about the Shikoku 88 temple...
This site is run by Ivar at in Santiago de Compostela.
This site participates in the Amazon Affiliate program, designed to provide a means for Ivar to earn fees by linking to Amazon