How to understand the sentence "Born to suffer"?

From the day a person is born, it is the beginning of suffering. When I was a child, I was often black and blue and suffered physical pain. Even if you were born in a very rich family and loved by thousands of people, it is irresistible to get sick occasionally, right? Injection hurts, but taking medicine is bitter. How can you cry for mercy or be forced by your parents or relatives? Nothing you can do can stop it. I think everyone experienced these difficulties when they were young. When I grow up, I will face further studies, employment, marriage and so on. If you don't pay attention, you will be devastated, bruised and exhausted. Isn't this the difficulty of life? In particular, we have to experience the death of our loved ones. Many people have experienced the pain and suffering of losing their mothers in childhood, their children in old age and their wives in middle age. Aren't these great difficulties in life? These situations that run through everyone's life fully prove that life is the beginning of suffering! Although everyone began to suffer from the day they were born, and even experienced hardships, as long as they face the bumpy road of life and are open-minded and calm, they will surely usher in a bright tomorrow and future!