Bodybuilding is of practically no use, make that absolutely no use, to society. Alcohol is of no use to society save some industrial and medical apps.
Cars are not needed, you can make do with public transit
It's more than just cars, the main benefit is the ease of transporting goods. The food on the supermarket shelves just didn't magically appear there. The machines and the medicine in the hospital just didn't magically arrive there. Without truck, trains, planes and ships, the whole system would just fall apart. The social benefit of this system is undeniable. And, while body-building is of no purpose, it isn't linked to tens of thousands of deaths and injuries each year, unlike Guns.
Alcohol can also be used as an alternative to fossil fuels, as they burn very cleanly, producing only carbon dioxide and water. Ethanol is considered a renewable fuel as it can be made from renewable sources such a sugar cane. It's really useful for countries without an oil industry as it reduces their dependence upon imports of petrol. Without Ethanol, countries like Brazil would probably fall apart. It can also be used in perfumes. Alcohol is also fantastic for cleaning, it also has many other countless uses from killing fruit flies to disinfecting.
