The wise man and his thoughtful answers

Once lived a very wise man in a village. He was very popular in that area as a man of wisdom. People used to come to him for any good advice.  

Once a visitor  came to know about him and wished to meet him. He went to his house. The gentleman welcome him and offered him seat. They had some conversation 

The gentleman was looking as if he was at his 40. Visitor asked, "How old are you?"

Gentleman replied, "I am 16 years old". 

Visitor was surprised at his answer. He thought, "He was already at his forty with balded head, but still he is hiding his age."

Visitor asked, "Who else there with you here?"

Gentleman replied, "Myself and my only son"

Visitor got pissed off with his answer. He thought, "I am seeing his wife and 3 Sons in the same house but still he is not telling the truth, What else can I expect from him? I must leave"

Then the visitor decided to leave. Then the gentleman asked him his purpose of visit. Visitor told him, "I am seeing that you are not telling the truth, I asked you your age and about your family both of them you lied."

Then the gentleman called his eldest son "Can you please come here?"

Son replied, "Is it fine if I come after sometime."

He called his second son and the similar answer. When he called his youngest son then immediately he came near him. 

He asked the Visitor "Can you know what is the real truth? Though I have 3 Sons, what is the use of them when they are not available when you need. Same thing for my wife". 

"How about your age then?" Visitor asked.

Though I am 46 years old, I have realised the the purpose of life only before 16 years of age and thereafter I started live a conscious live. What is the use of those age when you even do not know how and why you are living?