What is the judgment about celebrating a birthday in Islam?

Dear Brother / Sister,

It is not a sin, in general, to hold ceremonies and meetings for wedding anniversaries or birthdays. Rather, the actions during those occasions are under question. Sinful situations may occur in them.
People come together, eat lawful things, chat lawfully, ponder that one more leaf of the life has fallen, one more year from the life has gone, make useful chats. If they entertain like that, surely, such celebrations are permissible. No drawback is considered. However, if unlawful deeds are committed, bad examples are displayed through extravagant entertainments and excessive food waste, then we can conclude that the sin occurs from the wrongdoings within, not merely from the gathering.

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