Because some people play this outside because they don't have enough room inside their house, or a building. More room.

Because a ping pong ball doesn't bounce too well in the snow

It needs neither snow nor ice I guess.

It`s Table Tennis, by the way and to watch the best players in the world competing is incredible, they have huge skill.

Edit - OK now I have had 20 minutes of Ski-Jump Ping Pong going through my head, thanks.

you mean now... basically

and it wouldn't be a winter sport no snow or coldness necessary

It's awesome.

Is it? That's news to me lol

It's awesome?

Duh.