There is a lot to unpack here
There are no such thing as a citizen. It is a nonsense concept.
in a representative democracy you are authorising the representatives to act on your behalf.
1. I haven't explicitly authorized anyone, to do anything, on my behalf.
2. The representatives can only act on my behalf, in the domain in which I exist. In other words, I can't authorize them to act in Somalia. Or in Syria. I can't authorize them to act in outer space. I certainly can't authorize them to act on any other human being, in this country or outside this country.
It doesn't matter if you voted or not
This I can agree with, ostensibly for different reasons.
and if you didn't, you said in effect, I'm happy for other citizens to make the decision on my behalf or I'm happy for the status quo to continue
No. I never said that. I never implied that.
Go into a court to dispute a contract or any legal agreement and tell the court that the other party gave implicit consent to all sorts of things that weren't in the contract.
The only way to get out of it is to go live in some atol in the Pacific which hasn't been claimed by any country or buy a boat and float out in international waters - seasteading I believe it's called, at which point you arn't part of any nation.
Do you not see how fundamentally unfair it is to expect people with ethics and conscience to have to exile themselves from society?
It might make you feel superior to act like it's all a waste of time
It is for many of us, an enormous waste of time.
but that conceit is in reality simply a way of getting others to make the decision for you.
Friend, if you haven't realized other people make most of your decisions for you, then I am afraid you've been asleep at the wheel.
There is no way of avoiding responsibility unless you dump your citizenship and go live on a boat in international waters (and even then you'd need to pay for a flag of convenience).
It's not a matter of responsibility. It is a matter of ethics. There is no moral or ethical justification for invading anyone, anytime. There is no moral or ethical justification for stealing people's wealth in the form of taxes.
I get that you're a true believer in the system. Where were you when Iraq was being invaded? When Afghanistan was being invaded? Are the blood of those hundreds of thousands of innocent people on your hands, because you did (or as you rationalize, did not) vote?