Money and sensual pleasures cannot bring you peace of mind. This is a delusion perpetrated by the poor so they can hope for peace in money: perpetrated by the rich so they can think they have peace. I have been poor, most people know what it is like to struggle hard to make ends meet. Few people have riches and pleasures, so they assume that they will bring peace.
They do not. Money and possesions bring comfort to your body, but what are you? You are your thoughts and your mind. Unless they are comforted then you can never be happy. While money certanly makes it easier to spend time figuring out how to be happy, and sensual pleasures will distract you while they continue, neither one changes who you are. Your being is what makes you happy or sad, so only by changing your being can you bring about a change in disposition.
I would contest that this is an a priori fact, that there are certain things which will lead to happiness, and money is not one of them. How many rich people get divorces, commit suicide, get hooked on drugs, etc. These are indicators that they are not happy, but yet they have everything you say should make you happy. Are you happy now? In the dark of night as you lie awake and listen to the world around, are you happy with yourself? Or do you have to shut thoughts out of your mind, hide from facts and fill your life with business to forget how sad you really are.
Sprinter, what will happen when you are aproaching death? It isn't a moment or second, it might take years. What happens when something nearly kills you and you realize that everything you lived for is worthless? The existence you speak of is meaningless, selfish, and narcistic. I warn you, although you might not believe me. No, I beg you, listen to me. The last thing I want is for you to come to the end of your life and realize too late that we were right and you were wrong. By then there will be no time to change the selfishness that plagued your life, the empty struggle to gain a peace that is not yours. If you take your present path in life you will be end like this: alone and depressed. What good will your nonchalant attitude toward death afford you then?