Birth and Origin of extreme helium stars

I heard that two white men have a crush on each other produces this deadly laughing gas, like the recent movie Brokeback Mountain.
Our Sun is a yellow dwarf, I am not sure whether it is before or after the white dwarf, but I am sure I'll not be here to see its last day, nor will my son, my grandson and great grandson.

But, I am not sure whether I will see the ozone layer gets weaker and weaker and finally decided to give mankind a big wash from the polar cap, better start training my boys for sea survival skills.

Two big whit dwarf collide together and form this helium giant, In my view, suppose to contribute to a greater balance of the Universe, or destruction? (Link)

(Link) to the Chinese news

Tags: Universe Humanity Discovery Sun Star