I understand "car" as an example, because lets be honest it is a great comfort, and having your own car would make things much easier. Depends on where you live of course, for example I have never been there, but they say, if you do not have a car at Texas, no matter which part, you would have huge trouble, because everywhere is so far from each other.
But if you have a car in Paris, that would be a trouble to HAVE a car, it would be smarter not to have it, because everything is connected with metro anyways. But if you needed a car, and it made your life better ,then I get it. The parts I do not get, is getting latest iphone, or luxury brand clothes, or most expensive tablets, or tv's, and what not. Things where the alternative is still the same thing. Like, if you don't have a car, you use public transportation, but if you do not use luxury shirt, you still get a cheap shirt, it's the same product.
People should try to live life with less expenses because if you will spend more money then you could not save money for the emergency. For the emergency, you should save money, if you will buy the things which are not adding value in your life , you have to take money from other people when emergency occurs or you have to sell your precious thing at low price. People are saving money but they always do inventment but I think there should be liquid cash in your hand because if you will sell anything at low price then you will not buy that .Always try to not expand your legs out of the cloth and don't buy costly mobile phone just to show that you are rich person and you deserve more than you have in life.