I will give you my theory about identity and how it is entangled with everyone else's identity, and the basic relationship between humans and nature. It also explains how property, as an abstract concept, exists and is reflected to the real world.
I am a capitalist, because after a lot of time spent on thinking and analyzing the world, I have realized the private property is a naturally emerging phenomena, not just an abstract philosophical concept, and it ties directly into the physical world, and it originates from your identity.
There are more layers of identity for a human being, and each one is more abstract, but each one is stacked on one another, and it originates and links from the same core essence of your being. Some people call it the "soul" or "consciousness", whatever you want to call it, it's your core essence, and this is where everything you create in your lifetime originates.
Your identity is like a pyramid, with your core essence on the top, and everything else originates from there, each layer more away from you, but still linked to you. And the outer layers are where your identity is linked to others, in what is called society, or the wider nature. Let me illustrate:
1) You
It is your core essence, what makes you you. Some people call it the soul, the spirit, consciousness, whatever name you give to it, it's your essence of being.
2) Your Mind
It's your immediate property, your mind is the filter through which you experience the outer world, through the 5 senses, but also a place where you can think and make up ideas, that will have impact on the outside world.
3) Your Body
It's your physical body, that contains all your vital organs, your brain and the physical mechanism that connects your mind with the world.
4) IP
I don't refer here to the legal sense of IP, stuff like copyright and patents and trademarks. What I refer to here as IP, is the direct property that you hold in your mind. Things that you can memorize and it can have real value in the real world. Things like Bitcoin private keys, Steemit keys, Passwords, Secrets, etc...
5) Physical Property
Things that you have acquire through the use of of the other layers. For example using your body + your mind in order to make money in order to buy a house. It all essentially originated as an idea in your mind, then you did the necessary things to obtain the money, like working, and then you bought the house. The house is your property since it all originated from your inner layers and you did the things necessary in order to obtain it, so it is legitimate property.
6) Relationships
Although you cannot claim property over your relationships, after all they are not your slaves. However it is still linked to your identity, in the sense that you probably had to use all other layers in order to obtain this. You cannot have a baby without a shelter + food + other income. You cannot have a friend without having common interests and using your mind or your body to relate to eachother. All your relationships are essentially tied to your identity.
7) Other People
It's either the strangers you have never met, or the people you have no direct ties too. However you are still interacting with them indirectly through society. You may not know every single person on Earth, but you still interact with all of them through some way, shape or form. Be that the internet, the political system, global affairs, economics, commerce etc.
The point that I am making here is that essentially:
IDENTITY = PROPERTY
It may be looser and looser as you go down in layers, but the natural organization of the Universe is based on property and relationships. A layer that is closer to you is a stronger property of you, and a layer that is farther is a loose property, probably just an interaction.
So physical property is a part of your identity either way you put it. So when you see people demanding wealth redistribution and taxation next time, keep in mind that they are identity thieves, literally, and they want to steal your essence of being!