I was talking with (at) the wife the other night ( Holby City was on TV so she tolerated my opining as long as I paused at major plot points) and had a mini epiphany re life and conversely death. We are not a sole organism , a single consciousness, we are a sum of potentially independent cells, parasites and symbionts that share an experience that is sometimes , awe inspiringly, conscious. In short there is no static 'I' ; just a current pastiche of collocated lifeforms experiencing now as a set of flickering perceptions and currently called Dave.
When all the lifeforms cease to work together there will be a point where they will either switch off or move on and this cell metropolis will cease to be conscious and will be re-assimilated into the soil.
My wife thought I was a bit bonkers as well.