At what age did you stop going on holiday with your parents/siblings/family?

This question is pretty self explanatory. I am 23 and I do sometimes still go on holiday with my dad and step mum and brothers. One of my friends told me that it was quite odd as she stopped going on family holidays when she was 15. Her parents would go on romantic getaways by themselves.
At what age did you stop going on holiday with your parents/siblings/family?
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