Why was Superman’s home planet destroyed?

Reasons for the destruction of Krypton:

1. Krypton’s excessive gravity resulted in slow development of space technology, so Kryptonians were unable to immigrate on a large scale.

2. Krypton once vigorously developed human cloning technology, leading to the Clone War that swept the entire planet. Where there is oppression, there is resistance. This war has caused irreparable damage to Krypton.

3. Krypton itself is coming to an end, and a real monster has even been born deep in its core.

4. The Guardians turned a blind eye to the destruction of Krypton, but they and the Kryptonians are actually allies.

5. The destruction of Krypton cannot be reversed through time, because the time ripples caused will destroy the entire universe. ?

Krypton description

People living on Krypton are no different from people on Earth, but their sun is red, which limits their power. They are on their own planet. They are the same as us on earth, but when they come to earth, they can absorb the light of the yellow sun as their own power, so they have super powers.

Superman was born on Krypton. Before the destruction of Krypton, the infant Superman was launched to the earth by his father Jor-El. Superman's spaceship finally landed in Kansas, where he was adopted by a local couple and named Clark Kent. In "Star Light, Star Bright", Superman will answer the question "Where do I come from?"

Due to the abnormal attraction of stars, Krypton is on the verge of destruction. After Krypton’s scientist leader Joe-El issued this warning, the Science Council believed that he was demagoguery. So before Krypton exploded, Jor-El and his wife put their young son Kal-El in an experimental rocket and hurriedly sent it into the vast space, hoping to continue their hope. The spaceship later crashed on the earth, and the story of Superman began. Later, Superman returned to his hometown, but it was blown to pieces and there was nothing left!