Happiness thus requires the absence of problems, absence of trouble makers, absence of emergencies ....
Problems are created by ourselves directly - hence absence of problems can be directly produced by us as well - by the choice of proper action and by making the proper decisions in life. Decisions in favor of love instead of money or career.
in a simple life it is easy to fulfill all your family's basic needs - hence in a simple life it is much easier to make all your loved ones truly happy and to stay free for a loving life.
May be you noticed in your own past that happy hours, happy days or weeks pass much faster than problem days of fighting days filled with emotional stress.
In a world without electricity for example. what you do in night time without light ?
You listen to the voice of your lover
You smell your lovers skin radiating a magic fragrance of love when loved by you
You feel your lovers magic touch
You focus on metaphysical perception of your lovers presence
There are worlds of your love life that might get lost in a world when we always have light, TV or radio switched on most of the time. By switching OFF some of our daytime senses - we focus on all our night time senses of love and spirituality.
Hence a life with 12 hours sunlight for all the work and sunny part of life followed by 12 hours of deprivation from light to focus on all the loving and romantic part of life might finally be a very divine solution to keep our all love life balanced and healthy.