Compare the present form and be -ing
We use the present form when we are talking generally. Actions generally happen many times.
We use am/are/is + -ing form to talk about something that is not finished. We are talking about something that is happening at or happening during a specific time.
I play golf.
I don’t drink tea. It generally doesn’t happen.
Do you watch the football?
I‘m playing golf (now).
I‘m not drinking tea. I’m drinking coffee (now).
Are you watching the football (now)?
I‘m playing golf tomorrow.
I‘m not drinking tea next week. I’m having a break from it.
Are you watching the football tonight?
We use the present form for general descriptions.
We use am/are/is + -ing form for things that are not finished. These things finish in the future.
She has a baby.
general description: what she has.
She is having a baby.
action: what she is doing – giving birth.
This action finishes in the future.
(She may be giving birth now or pregnant now and giving birth in the future.)
I live in England.
This is generally permanent.
We are not thinking about it finishing.
I‘m living in England.
This is temporary. We are focusing on now.
We are thinking about it finishing.