Why should investors be bailed out?

Why should investors, including big banks and financiers, be bailed out if their investments go sour? I would like to make a point (in general) about why they shouldn’t.

Corruption. Didn’t the recent gathering in Scotland have a decision regarding debt reduction to analyze? I remember there being many things to consider; one of which was how the governments of the developing nations use the money. AND corruption on the high levels was one of the considering factors. If the money that would be spent on debt is instead not shared for the benefit of the population, what good is reducing the debt?