No reason why people shouldn't be attracted to beautiful things. As for getting turned on by, well in Hentai there's no reason why not, or maybe when you put characters in certain situations. I like Cloud x Tifa fan fiction for example which goes into "detail" because I like thinking of how they would be if they were real.

Plus Baralai and Gippal are sooo hot in FMV form. *drools* and the girls all look pretty sexy in certain dressspheres. =]