Final answer:
The main message of Celine Dion's version of "All by Myself" is not that it was fine to be lonely when she was young but not as she has gotten older.
Step-by-step explanation:
The main message in Celine Dion's version of "All by Myself" is not that it was fine to be lonely when she was young but not as she has gotten older. Instead, the song conveys a sense of longing and sadness about being alone, emphasizing the feeling of heartbreak and the desire for companionship. The lyrics express the pain of being without a loved one, rather than suggesting that it was acceptable to be lonely at any specific age.