We all participate in unethical business

Incorrect. Far from everyone (who lives in NATO) does actual contribution to NATO’s colonialism.

and am angry about how my taxes are spent on it.

This is a backwards view on the matter. The government literally cannot run out of money. What taxes do is remove money from circulation. There isn’t really a difference between a government having taxed a sum of money and that government not having issues that money (apart from what people actually did for that money).

A lot of these sailors probably joined the military fresh out of high school with nothing better out there for them

Other choices being worse for these people do not make this choice morally justifiable. Surely you aren’t in favour of people taking random bribe simply on the grounds of the alternatives being less self-serving?