Wrinting a letter is like a game

As a traditional Japanese culture for a New Year greeting, there is Nenga-jo, a letter on the New Year term. Nenga-jo has some writing manners. One should avoid using commas and periods because these mean stopping and ends. I do not make sense but it is a manner. I need to make appropriate sentences that mean everything I want to convey. If I use commas and periods, people who receive my letter will think I have no idea about manners. It is like a game with a limitation. This case limits short sentences while these mean everything I want to say. 

On the other hand, ignoring the manner might be justice. Maybe, this manner naturally occurred in people who stopped manually writing long sentences to many addresses. Writing messages is hard work surely. If the manner did not exist, many people would give up. So, the manner looked reasonable. But now, we can use a printer instead of writing something by hand. So, we do not need the manner. A lot of messages can be put into a letter. 

In addition, in recent years, many people have stopped sending Nenga-jo letters. That means people who receive them tend to be less. So, people get more time to read each letter. 

My conclusion is that putting a lot of messages into a letter is righteous because the letter is a good opportunity to convey everything easily.