It doesn t stop. People continue on and the only legacy we can hope to leave behind in this world is what we achieve. This part of our life, also called our past, is the only thing that links our spirit to reality. The spirit cannot continue to maintain its existence without a body to ground it. Only the end trials of the spirit survive.
Memory is what survives.
In that essence, the spirit lives forever. The spirit of course still lives, but it lives on another plane. The body at its death ceases to exist in our reality. Much like death, when we reach the end of something part of us dies. We change in little ways and we are not exactly the same as before.