People, a few centuries ago relied on animals for their transport. The use of horse driven carriages, as in some of the cartoon fairytales, was the main means of travel and that too, was mainly by the elite of the elite. The growing into the use of metal instead of flesh and blood was a big leap for us humans. The comfort derived from said metal is one of its most endearing qualities.
Flexibility has been enabled by the use of cars in this age and time. Long ago, as we have earlier established, the use of animals was rampant. Rail was also a widely used means of transport. Rail was mainly used to transport people who were going to far off lands that would take longer to get to when using animals, as well as for transporting mined goods like coal. As the times changed and also the use of boats and air planes were incorporated, social classes only grew since all these modes of transport came with social stratification. For the wealthy, they would be allowed into first class while the average or poor person would be restricted to third class. Cars are able to lower the effects of social stratification. The booking of a ticket prior to making travel plans is not needed when travelling with cars too.
A sense of personal freedom has been developed in this age. One can go for work, shopping or even go to fun hang outs with friends at any time without having to have booked a travel spot beforehand. Looking at this advantage will help us expound our thinking in other aspects as well. An ambulance, for example, is but a call away in case of a medical emergency. In rural areas, however, ambulances might not be on call and this raises the value of a residence with a vehicle since they will be able to take the ailing to the nearest health center for help.
Taking vacations without having to have booked a ticket is easier for those with cars. It is not usually an uncommon sight to see families decide to go for vacation weekends. Throwing their luggage in their trunks, they just up and go. The ease of travel to remote areas is not able to be afforded by just any means of transport. A boat limits you to water and rail limits you to the areas that have a rail line extending to them. Possession of a car is thus, a luxury since it has many benefits.
If cars had not been invented yet, we would be stuck in a very stressful time. The conclusion that cars are indeed important to us can therefore be drawn comfortably.