Some people have had experiences that they know better than to talk about with others who have not.
Yes, indeed. You are so right. I was going to say that it is a matter of faith, but when I saw your comment I knew that perhaps you too had experienced something that let you know. There aren't words to describe it.
My grandfather was in a care home. He talked for a week about going out with Mary, my grandmother, who'd passed a few years before. One evening, he got out his good shirt and slacks and laid them out for the next day. When he got up, he put them on. When the nurse commented on it, he told her simply that he was going out that day. When she said that she was going down the hall to get his meds, he replied, "Well, go ahead, but I'll be gone before you get back." She left to get his drugs, and when she returned, he was sitting in his chair, having left the building seconds before. Talk about an exit!
3-1/2 years later, and I still ponder things I cannot put into words.
I had both an out-of-body-experience and a NDE when I was a teen after a car wreck. I didn't understand what they were at the time, other than inexplicable to me. I don't know whether what happened to me is proof of an afterlife, but it sure was proof to me of the supernatural or at least proof of another dimension.
The OBE was very real, the NDE in hindsight, was a little fuzzy and a little harder to remember and explain. I don't remember a light or a tunnnel, but do remember great peace and beutiful soothing music and being surrounded by beautiful fauna. Never before or since have I ever felt such a great feeling. I don't know where I was, but didn't want to leave.
I was in a coma for about two weeks and spent about 48 days in a hospital.