What bad things happen in space?

Answer 1

Whatever happens in space simply happens there. It's not 'bad' and it's not 'good'.
it's simply the laws of Physics playing out in the natural, physical universe.

If there's a human being or some other life form, evolved to live in a particular
environment but somehow finding itself in space, then the drastically different
environment won't support his life in good health for very long, and I suppose
that's 'bad' for the poor displaced creature, who is not where he belongs.