“Whatever is could not be otherwise.”
True freedom and the end of suffering is living as if you had completely chosen whatever you feel or experience at this moment. This inner alignment with Now is the end of suffering.
Is suffering really necessary? Yes and no. Without your suffering, there would be no depth, humility, or compassion, and you probably would not be reading this now. Suffering cracks open the ego and is necessary until you realize it is no longer necessary. Unhappiness needs a mind-made story of “me,” and it needs time—past and future. When you remove time from unhappiness, what remains? This moment.
Much suffering and unhappiness arises when we take each thought in our head as the truth. “What a miserable day,” “He didn’t have the decency to call,” “She let me down”—these are stories told as complaints, making others wrong and us right, and with being right comes strength and superiority of the ego, which gets fed. With these judgements, you have a reactive relationship to people and events in your life, and the ego feeds on reactivity and conflict.