Happiness is what we get on things that made us more comfortable or be within our comfort zone. Other people only got smile because of money, but they're actually wrong on that state; we can be happy without money since there's a lot of things will put joy to us like spending time with family. Money is only a secondary tool for us to fund on our needs, sometimes both of them will come together in times of abundant lives.
We live in a material world and in order to provide even the minimum needs for our normal life, we need certain material benefits that can be provided to us as a substitute for these material benefits - money. If we have money, and therefore material wealth, we will feel comfortable and instead of the need and need for making money, we will have the opportunity to use free time for our spiritual improvement, which is actually the purpose and meaning of our life. Money cannot replace much in our life, but with the right attitude to life and to money, we will have much more opportunity to realize what is the meaning of our life.