This is my final attempt at illuminating an imbecile, a well nigh impossible task by any measure.
First, check the dictionary and learn to differentiate between ownership and usage.
Next, owning a car doesn't mean you have to drive it every day. Just like owning a Rolex doesn't mean that you have to wear it daily and you can't wear a Casio to the gym. A car gives you options between your own private transport and various forms of public transport, to choose whichever is more convenient or hassle-free depending on time of day, destination, purpose of trip, route accessibility. (And a world-class MRT definitely offers another viable option.) Not having a car limits your options. Just so, owning a sailboat gives me the option to sail to Phuket, if I have the time, or fly, if I don't.
I know that it's difficult for you to fathom why options matter to our quality of life, given that you own neither car nor boat, and your two brain cells are occupying all the space between your ears.