Why do people marry the people they wed?

Long hours over Nietzsche I frequently spend,

I’ve all his philosophy at my tongue’s end.

Of Freudian conclusions I haven’t a doubt.

I’ve got human complexes all straightened out.

But on this deep problem I muse in my bed—

Why do people marry the people they wed?

I’ve studied up ancient religions and cults,

I’ve tried spiritism with curious results;

I know the Piltdown and Neanderthal man,