Eli5 – Why is it so difficult to dig to the Earth’s core?

Question

The most central part of the Earth’s interior would require drilling approximately which is 6,370 kilometers (20,898,950 ft)

The deepest drilling ever conducted in world history is only 12 kilometers (39370,1 ft)

Why is so hard and and is the effort worth it? Or we only will find more rocks ?

In: 25

Answer 1

We technically could.. with a chain of nuclear explosions carefully placed to evacuate as much ground as possible. But no one is insane enough to try that for obvious reasons.