If anything surely 'middle aged' would be going up in years not down? What with longer life expectancy and everything.
I would consider myself middle-aged but I am 52 so maybe that is optimitistic - but I'm not old yet surely?? what is the bit between middle-aged and old called?
My eldest daughter is 26 and I think after a long Uni stint I think she would consider that she is only just starting to adult 😂
I think of 30 as young now, but its all relative I suppose isn't it?