> People can change over time in ways you wouldn't anticipate, but if you marry someone only once you know them deeply (and if you don't, you deserve what you get), you should be reasonably confident of what sort of person they are or could become.

"Reasonably confident" is a remarkably weak threshold for putting half of one's future wealth on the line. What else does one deserve to get, as "punishment" for not being sufficiently perceptive of a future spouse's character?