Is there anything bad to be defense contractor of your country?
But what is euphemistically called "defense" is far more often about offense - attacking those countries and people who displease or are inconvenient to you, making sure the world is structure to suit your* interests, usually at the expense of the interests, and often the lives of people elsewhere in the world.
* - In reality, the interests of the elite of your country.
At other times, it means selling F-16s, Apaches and munitions to Saudi Arabia, so they can carry out a brutal bombing campaign in Yemen. There are no good or evil regional powers, only national interests and the smaller nations which either get in the way of those, or help you achieve them.
Be that as it may, it still matters how the people in power think and behave. Some systems of government are better suited to reduce violence than others. For example, a dictator is probably more likely to order military intervention than a person who has to justify their actions to advisors, a congress and eventually a whole nation.
Obviously as you say things get murky when there are large interests at stake and no side is wholly good or wholly evil, but still some can be more wrong than others.
Is there a country in which spend the majority of your time? If yes, then that's your country. Don't like it? Move to another one or get politically active.
> That's a manmade concept that is forced upon me against my will.
Nearly everything in our day-to-day lives is a manmade concept – that doesn't make it any less real.
That changes regularly enough. Just because i like a place doesn't mean it's my country.
I think you're conflating geography with political structures. I feel at home everywhere I've been and i don't quite understand the insatiable jingoism because all places and people are great and not so great in equal measure for various reasons. That said I'm not naive enough to expect it to change and if it were to change i can't really even see a pathway for that to happen. It only takes one person to spit in the punch to ruin it for everyone.
Accusing people who are not pro-government of hypocracy because the use public services is absurd.
You cant not pay my taxes and opt out of government services.