Darwin's case for marriage

This is the question

Mary

Children — (if it Please God) — Constant companion, (& friend in old age) who will feel interested in one, — object to be beloved & played with. — —better than a dog anyhow. — Home, & someone to take care of house — Charms of music & female chit-chat. — These things good for one's health. — Forced to visit & receive relations but terrible loss of time. —

Source: Darwin Online

That's only the beginning of some scribbled notes by Charles Darwin. He also lays out reasons to avoid marriage and pontificates on when in life to marry.

At least he sounds a little more sane than Einstein, who's wife was persuaded partway through their marriage to sign a contract stating that, (e.g.), she would "renounce all personal relations with [him] insofar as they are not completely necessary for social reasons"