If it were the end of the world how do you think it'll end?

Sorry but we have to go for the logical ones.

The sun will explode millions of years from now
The earth has a chance of surviving the sun's explosion, but even if it does almost all life forms will probably burn. Unless, humanity has polluted the earth enough to where they had to like,,,, live on Mars or something.

But out of them options a large meterorite colliding with the earth is the most logical option.

... *checks options* WHY IS THERE NO OPTOIN FOR THEE HUMAN KIND? That's what is gonna cause the world to end...
*I am so sorry. I just hate human kind.*

All things well destroyed, may be there will be a earthquake, mountains will be fell down......and no one will able to hide

FIRE TORNADO!

Anything to do with fire is good.

The Possibilities Are Endless.