I agree they went a bit overboard with rain in Sims 3 (what are the creators, Dutch? Irish? :p ). But weather as such, I love that in the game (so I accept the rain, I love the snow and when I'm fed up with the rain I simply disable it for a while; it's nice how you can select what type of weather you do or don't want). Not only does weather in the game contribute to the atmosphere, it deepens the experience. Like the life of my homeless sim wouldn't have been the same experience if he'd always had sunny days. Rain, freezing, snow, that time he was struck by lightning, it all made his life much more interesting. I really felt his need to find a proper place to spend the nights at wintertime.
