That is a really interesting perspective. We are just parts of the ‘system’ (I am using the word system here for lack of a better one). But what if the system is not made up of separate parts, like a car? If you take out a part of the car, maybe a wheel, then it becomes different, it behaves different. The parts are thus individuals. What if the system is more like a liquid, such as the sea? If you take out a water-atom, it is practically still the same. It still behaves the same. So, the parts are not individuals.

If you take a human away, their immediate environment will be changed a lot. However, the universe, the system as a whole does not function differently from before. So, in that sense, individuality is an illusion when you look at it from a very high level perspective. This is different from a more local perspective, of course. When I lost someone in my environment, my personal universe changed completely.

I hope I make sense. I just really liked the thought you expressed. :-)