Have we started living on "days"? Why can't we live life everyday instead of allocating specific days ?

I just can't understand the concept of "Mother's Day", "Father's Day", "Valentine's Day", "World Music Day", what is with the days? Are we supposed to show our affection or love only on the days specified, which are like 1 day in a year ? What about the rest of the days of the year ? Why can't we live life in such a way that everyday is a valentine day, or mother's day or father's day? It is not about gift, is it ? Its about the love and affection we can give to our loved ones. How can we stop living in "days" and start living everyday ? What are your ideas on this ?