As I've said before, the grass is always greener on the other side. However, as the Aussia has said better than I can (>>574), cold weather has an advantage because it's easier to deal with and doesn't punish physical activity as much as heat does. Furthermore, for those with lighter skin and colourful eyes, sunlight is harsh.
Yet, if you're open-minded enough about weather, it's possible to see that both sunlight and
gloom are beautiful at the right place and time. Sunlight is opressive at 30+ temperatures, but it's wonderful when it's cold and/or at the early morning or late afternoon, just as drizzle and cold are comfortable and lively (lush vegetation after a rainy week is a sight to behold) as long as they don't last too long or get too cold. Thus, an ideal climate would have its moments of heat and coldness rather than just one of them forever. (This already rules out tropical climate, which has the same dull temperatures for the whole year). The exact temperature range would vary a lot according to personal taste.
My ideal climate would either look like this:https://en.wikipedia.org/wiki/Ifrane#Climate
How would your ideal climate look? Post some statistics like these