I have family that served in Vietnam and Iraq, but I personally won't be going unless there is an immediate danger to the mainland USA and they severely alter the draft to incorporate individuals who may or may not be mentally fit for the battlefield. I'm Autistic, so chances of me getting drafted are very slim, and I'd only join up if I made certain strides socially speaking (these earplugs do wonders for hypersensitivity).
My personal experience doesn't go far from reading about wars and thinking about them. I'd also rather avoid war in general, except as a means to protect something I care about, and only if that thing is in immediate danger.