What is the purpose of having strong emotions and feelings? Are they beneficial to us?

Strong emotions and feelings are what create our thoughts. Emotions are E- motion, energy in motion. Emotions are the raw material of our thoughts. If we have negative emotions, like doubt, fear, worry, stress, hate, anger, revenge, these negative emotions will create toxic thoughts, toxic feelings. But if we have positive emotions like faith, hope, trust, love, compassion, courage, confidence, then these emotions will create positive thoughts and positive feelings. It is for us to choose NEP or PEP, negative emotions that are poison or positive emotions that are power. It's a choice, and this will become the raw material of our thoughts, our feelings, our actions and ultimately, our life.