My 370Z is a luxury, my toy, a rather expensive one, I'm aware of that.
I also have a Fiesta and I work in the city, which I use the stinking train for.
If I lose my Nissan, it's a big loss, one I'd not be able to afford to replace but it wouldn't have too much of an impact on my day to day life.
I think, because of this and not needing to rely on my Nissan, I find it easier to make these decisions and calculated risks.
I'm not trying to defend anything, just trying to validate my decisions a bit more over the obvious risks you correctly point out.
Who knows, it may well play on my mind a bit more now .