Marina, I haven't heard that before. I am curious what aspect of it is unhealthy? But I do think I see how disliking certain weather might be mentally unhealthy. Better to try to see good parts in what you have.
Hardik, as a child I loved to play in snow and to sled on slope, so if you are living in a warm climate, you are missing out :)
Darina, yeah, sometimes my friends and I get a feeling like there's just not enough sun around here. Some people have what is called seasonal affective disorder, and some experience it more strongly than others. It's more prevalent in countries like Norway.