I would love to live in Snowpoint City temporarily, but I think the snow would get me down after a while. (It would wreak havoc with my practical side - what if I couldn't get to work one day because of the storms, etc.) So I would just grab my Charizard and go for a holiday there when I needed some Christmas cheer. XD
As for living on a permanent basis...gosh, I'm picky. I was thinking Dewford Town in Hoenn because it seemed peaceful, but then I remembered they're all obsessed with ~what's fashionable~ so, ew, no. I'll root for Veilstone City in Sinnoh: the large Department Store and Game Corner means there's a good rate of employment (IE. disposable income), it's an urban environment so I feel comfortable, but it also has a good transport route with Solaceon Town, where I would go to learn about breeding and whathaveyou.