Even though NOW doesn't quite look as a happy day (or a happy night),
it might do so in the years to come, in case things go worse.
So I'd rather enjoy it, instead og thinking of a vaguely happier days which in ANY case are not now, and ... the laughter is mute, the smiles are smeared and the words -changed.
Now can be always happier than then.
As of future happy days, they will be happier when and if they'll become NOW.