We don't live in a free society. If we lived in a free society, we would have to, from scratch, determine how best to cooperate. You complained about taxes: Taxes exist for a reason, because they are part of an enormously complex social structure whose main purpose is to support the concept of private property.
I am asking you to consider that if you want more freedom to love your kin, then maybe you ought to abolish the system of coercion that props up capitalism. It's not the taxes at fault. The taxes are there because without them, the system destabilizes. History teaches us that much. If you want private property, you're going to have taxes. The best you can hope for is to be the top of a feudal hierarchy where all the taxes feed into your estate. That does not endure, as we are all aware.
I don't think caring about everything means you want it to be homogeneous. I also reject globalization at a personal level, because I see it as a horribly violent system of interlocking political, social, and economic forces seeking to assimilate more and more of the world into their hierarchy of exploitation.
What I think it means to care about everything, is to not be myopic. It may be your intent to love your children, and even love them more than other children, but it may very well be that the best way to do so is to love all children. Is that unreasonable? It may be that the best way to love your children the most is to care about the entire ecosystem. Is that unreasonable? I think human beings are remarkably good at seeing the connections between things, and even if instinct is what tells us what is important, it is something far more dynamic and intelligent that tells us what is true.
If you want to be an individual, I think, personally, that it means you must find a society that supports the kind of individual you want to be.
I can't imagine being an individual without other human beings around. Realizing that, I see that my individuality is found in my community; my place in my community is part of my individuality.
I can't imagine being an individual without the world I live in. Realizing that, I see that my individuality is also found in my planet; how I treat the Earth is part of how I treat myself.
P.S. If we ever get to the point as a species where we can generate a new universe, I think it would be enormously important for every individual to contemplate what that means about what we are.