On: I spend £8,500 a year to live on a train

[vkou]

> If nobody minds, then in what sense is it not okay?

Nobody might mind a one-off antisocial behaviour, but if it becomes a pattern, or if everyone starts doing it, everyone might start minding it.

[Brian_K_White → vkou]

then it would not be ok. then is an imaginary some-time/some-condition.

[immibis → vkou]

So hypothetically, if things were different, it might not be okay... so it's okay now.