I think I mentioned this before - this is a fine like we are walking.I sense a lot of judgement in your posts aimed at others, not self. "You drive a fancy car? Well, you can't be a good Christian!" You may not intend it to come across that way, but that is how I am perceiving it. It is about what is in your heart, and how you live your life, not what you own.
No matter what you own, it can cause envy in someone. You say that you will never buy a "rubbish" car. "So a clean and well maintained car." What about the person sitting at the bus stop, waiting an hour in the rain for the bus as you drive past in your "clean and well maintained" car? Could they not envy you for having that when they have none?
For example - I get to drive the best car in the world, easily and hands down the winner in any contest.
I do not believe this makes me a bad person, this car did not cost me the same money as a Ferrari or any other fancy sports car.
I do not believe because of the car I drive I am a better person, but there is no way I share it with others either as this car belong to my family.
If someone comes to me and says, "yes, but do you know how good this car makes me look." the first thing I say is, "but how can that be." Something of lesser value cannot make something of higher value look better, so how can a car make you better, or even to look better. Saying that implies the car is of higher value than yourself as a human being, and that is impossible, no number of cars/phones/gadgets or whatever can add to the value of any single human being, even the ones considered as least who walks this earth. For a simple reason, each person was bought at a great price, paid by Christ for each of us.
So cars/gadgets/things can never take higher place as any human, if it does, that person thinking this way is simply deceived by the lies of the devil himself.
Therefore, I believe that those walking in the Kingdom of God today here on earth, will spend any resources on human life far easier than on material things. I mean, what is the Kingdom of God about then.