The habit of writing a letter has been almost discontinued because of the use of text messages, emails, and social media.
People do not write to each other anymore, much the less to someone who is not here alive and in this world.
We lose many possibilities with this restriction. Writing a letter can be a vital tool for clarifying our feelings even to ourselves, not to say to others. The real purpose of a letter can be as diverse as we can possibly imagine - to inform, instruct, entertain, amuse, keep in touch, or even provide documentation and the most loving sentiments.
Letters can also be a way to write down thoughts, ideas, feelings instead of real-time and place events. It can be used from complaints to companies, to a love declaration or opinions on current affairs (letters to newspapers).
Typically, it is easier, and also a healthy way to develop one's own voice. Diarist Anaïs Nin began her first journal entry as a letter to her deranged father as a way to remain connected with him. She never actually sent the letter, but it ended up being the spark for her writing passion. Most people know of the famous Kafka book Letter to his father, which is also to this day an unforgettable one.
Some people even choose to write letters to their pets, but in truth, we can write letters to whoever or whatever inspires us. Perhaps the most satisfying aspect of letter writing is the opportunity to communicate exactly what is in our minds.