I can actually relate to that to be honest. I can't speak for OP, if it's about boredom/fun then it's very selffish. But it might be about making a difference there.
Because military, government etc. all deserve people who are in it for "the best" / purpose alone, especially if that's different from the motivation of the majority of people who join.
There could be multiple meanings here. Do you mean because a big part of being in the military involves dealing with boredom, so it would be illogical?
Or do you mean you think they are joining to be violent? There are plenty of nonviolent MOS. For example, they might want to be a cargo pilot or join the cyberwarfare program.
Because military, government etc. all deserve people who are in it for "the best" / purpose alone, especially if that's different from the motivation of the majority of people who join.