Agoraphobia?
More likely just reclusive.

I should be famous
My life’s been outrageous
Might even say courageous
But now I sit around all day
Because at home I’d rather stay
I’m quite happy hiding out
Where I can just knockabout
Don’t wanna’ be out and about
Having to leave makes me pout
I care not what they say
I’m liable not to dress today
Being at home is my way
Here I’d most like to stay
On any old day
That’s perfectly okay