Do Guys like when a woman wears high heels, or do women just wish we do?

I don't think it is an either/or question; particularly as framed. As a male I will readily admit that high heels tend to spotlight and increase the attractiveness of a woman's legs and, er, other assets, but otoh my more common reaction is "why do women torture themselves, and do possible damage to their feet and calves" and I suspect the answer (except in specific situations) is far more complicated than women doing it to be sexier to men. I think it has much more to societal imprinting, i.e., fashion dictates, that certain dress demands high heels. I believe it originally came out of the same misogynistic cultural mold of Asian women having to bind their feet to be more subservient. Ironically, in today's society it can be an effort to more feminize women's business attire at one end of the spectrum and is forever tied to the Dominitrix "uniforme" at the other end of the spectrum.