Why are these holy-days so important to us? Because we live our normal days in an unholy way.
In the normal days, we are so miserable with our tedious job so these holy-days are kind of a relief for our continuous toturing days.
Just like entertainment, what type of people are very much attracted to entertainment? The miserable type. Otherwise, anything can be an entertainment for us. We dont need to wait for some holidays, some occasions to celebrate life. Life itself is beautiful, its just out of our false way of living that we need some special occasions to celebrate life. Life as such is a celebration 24 hours a day.