Jesus, in answering Nicodemus in John 3, outlines two fates: one for those who are saved, one for those who aren't saved.
That's why recognizing Jesus is king and submitting in faith to His will is the most important thing one can do. However, the benefit of life isn't reaped only after you die- there is an inexplicable and unexplainable joy in submitting and having a personal relationship with the Lord. It's something I've found unable to replicate or come close to through any other experience in life. Wiser, richer, more accomplished people than myself have found the same. Jesus himself tells us in John 10:10
There's nothing that compares. It is real. It's why when I hear stories like yours, where they have sought after this but not been able to find it, I am especially heartbroken. I don't know your circumstances, what transpired, or why you didn't find what you were looking for but I have faith that Jesus's words are true when He says seek and you'll find, knock and the door will be open to you, so I pray that you will find that opened door.