Logic behind day VFR

I'm looking at this from a newbie's point of view.

Why build day VFR? Not so much of a question of why not IFR, I can
understand that. But why day only? Is it just that much simpler to
build? In many areas (I learned to fly in the LA basin, Torrance)
lights are almost a neccesity.

Just looking for the logic, not being critical of the decision.
--
dillon

Life is always short, but only you can make it sweet