I'm not sure what "At the end of the day" adds, except maybe it allows you to disregard counterexamples. I guess that
> it's everyone's highest priority to do what's legal, rather than what's "right".
is something that can be tested and its truth discovered. Not clear if "everyone" means people in your city, state, country etc. Although "highest priority" seems a bit vague too. Does "highest priority at the end of the day" mean, what people actually do/end up doing? That sounds nowhere near true for me, or the people I know. But maybe I'm misunderstanding you.
People whose behaviour is guided by laws, rather than ethics, stand out as sociopathic jerks, e.g. internet trolls or bullies. "There's no law against it" doesn't say much at all about whether you should be doing something.