What is needed? certainly satisfy primary needs, but then?

It is often the lightest, seemingly useless things that make us happy.

The superfluous is everything that gives meaning to the moment, to the here and now, what makes existence pleasant.
Logic is not enough, there are no objective parameters to measure emotion.
Utility, meaning and purpose are not sufficient to explain.
And then we are appreciating the ephemeral,
the unsaid,
the superfluo.