Is choosing not to drive your car social heresy?

I still go to school and it's around 5 km from where I live so I usually catch a bus and drive there independently for once a week on a Friday.

My sister is only one year younger than me and she reckons that we should bring back the use of horses. She says that they are a part of nature and yeah. It's far better than any man made vehicle such as cars, buses, trains etc.