"Do not regret growing older. It's a privilege denied to many."

[Technician]

"Do not regret growing older. It's a privilege denied to many."

Hi.
Please teach me about the meaning of it. I'm at a loss how to interpret this saying.

My try.
Don't regret to become an old man/woman. Because growing older is a privilege of you. Many people cannot become older, but you have the privilege to become older.
It doesn't make sense.

My another try;
"Growing older " is not the matter of aging. It is a figurative expression of "becoming mature".
So,
Don't regret to become older, because becoming older means becoming mature. And only a few people are allowed to become mature.
Fortunately, you're the one, so please do not regret.

Am I understanding correctly?

 

[kisu]

"Old is gold" as the say.