It is unreasonable to require a person, albeit implicitly, to justify their motives, when the thing they are objecting to has a material impact on their life. I

It is unreasonable to require a person, albeit implicitly, to justify their motives, when the thing they are objecting to has a material impact on their life. In this thread people are talking about noise, pollution, safety and more. Yet you side-swipe his/her motivation. Your fun is yours alone. Their motivation is theirs alone. A vehicle's aforementioned externalities are common though. We can just focus on those.