Drowning I can understand, but anyone with sense can realize that regardless of currents, if you swim straight up there will be air. And water allows for more freedom of movement-- try doing a triple backflip on ground.
You know I met somebody who swore that he would get a fungal infection if he submerged his head in water? I wanted to smack him.
In space theres just this awful abyss, total lack of control, no safetey anywhere, though if I died in space it would be pretty awesome, I mean talk about a fitting view for your own death. If I could die calmly in space while staring into NGC6357 with a great understanding of it all then it would be the perfect ending to my life no emo.
For emphasis, here: http://www.robgendlerastropics.com/Nebulas.html