Because all the employers will want a "young, dynamic, ambitious person, rather than someone who wants to just fill a gap in the accounts".
How can someone who is not yet 15 manage to put their finger on ageism in the workplace with such accuracy?
How can my lovely son, who I worship, think I am such an old fuddy duddy?
And will I ever manage to convert my crappy CV into one that will get me back into the workplace?