Just fundamentally, to fight, you have want to win.
You are arguing to stop fighting on the basis of a supposedly improper desire. Wanting small bite sized things is proper. Wanting something audacious is not. Your kind of argument could work in theory if my desire is unserious. That's just psychology, not technology.
The scariness and the capabilities of an adversary is never, on their own, a proper reason to not fight.
The valid reasons can be: a deeply reasoned and deeply felt long term change in priorities, or a tactical hiatus to rest, regroup, reload. These are completely internal affairs, meaning, a serious person cannot be casually argued either into or out of these. I would check in with my soul to know whether or not to fight. Not with strangers on the net.
People fight to satisfy a certain hunger, and not because it looks easy or is a popular thing.