"May you be away for half your life and still a young man when you return."

As a human being living on the earth's world line, you never have to worry about BTC and LTC aging earlier than you. Your aging rate must be much faster than that of BTC and LTC holders, while BTC and LTC will stay young forever.

To put it bluntly, men's aesthetic taste is extremely stable. When they are 20 years old, they like 18-year-olds, and when they are 80 years old, they still like 18-year-olds.

To the holder, BTC and LTC are like a singer and civilized girl who is always 18 years old. She accompanies the holder from the age of 20 to 80, but her appearance remains forever and you will never get tired of looking at it. Tired, he decided to leave her.