While many are quick to question why one would choose not to have kids, few ask themselves why they do have kids or are prepared for the reality.

FORBES: Why Have Kids? Exposing The Motherhood Paradox

The precedent would be poor for discipline as Conservative MPs would ask why they should follow the rules if others do not and get away with it.

BBC: Nadine Dorries' fate rests on slip of paper

But some may ask why, if investment banks make so much, other banks do not enter the market and undercut their profits.

BBC: What do investment banks do?