> If you can't defend yourself against that then you have no rights.
I do not own a gun and I have no fighting skills, so I cannot defend myself against men with guns. Would you agree that I therefore have no rights?
I think that you and the original poster are seeing the situation "you are vulnerable to potentially losing rights in the future", which is true, but conflating that with "you have no rights". It's like telling a rich person "you actually don't have any money" because it's possible they might be robbed someday.
You have the right to vote, if you lose that right, and you don't have a gun after that you have whatever 'rights' that are provided to you by a dictator.
One of the things you're missing here is the idea of herd immunity. While you won't fight for your rights, theoretically someone else will making taking your rights dangerous. Once enough people won't fight for their rights, or enough of the population gathers together to take your rights, you lose your rights.
I would say you're wrong. The right to vote does exist because men rose up together and fought leaders that wouldn't let them vote. And, when leaders rise up that take our right to vote and we don't stop them they will prevail.
> it's just that everyone on the planet with a weapon has coincidentally decided not to murder you, for now.
Correct. Start up a big disaster where food goes away for some reason and it comes back.
We have a stable world where we don't kill each other at the moment because in general we all have food, water, shelter, and I would say enough entertainment that fighting each other isn't worth the risk. There is no rule that says this will last forever. Quite often in history there have been stable times, that then fell apart because of greed and malice of leaders.