Bottomline, there is no sense in driving on the right today, but it did hundreds of years ago. Driving on the right (on those countries who do) has simply stuck

Bottomline, there is no sense in driving on the right today, but it did hundreds of years ago. Driving on the right (on those countries who do) has simply stuck out of habit, customs, rules, or choice. The "there is a perfectly good reason" should read, "there was a perfectly good reason."