I will answer first.
I will love to quit gambling when I am 42yrs because I don't want to give gambling much time and I will prefer to look for an alternative means to have fun.
Why do you want to quit at the age of 42 years? Is there a specific reason for that? Personally, I don't plan to quit gambling as long as I'm enjoying it. Even if I'm relatively old, I still find gambling to be a fun hobby and a form of entertainment.
IMHO It doesn't matter how old you are; if you can afford it responsibly you can continue to gamble for many years.

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