Why Did Adewale Leave Edward?

Adéwalé's last sail together with Edward In September 1722, before Edward left for England, the pirate and Adéwalé sailed one last time together in order to recover the gold of a sunken Spanish vessel, the Polvora.

How did Edward Kenway die so easily?

After making sure that his wife and son were safe, Edward raced to the games room and was confronted by two of the intruders; after a prolonged fight, one of the men managed to impale Edward through the chest with his sword, killing him instantly.

Does Haytham hate Edward?

Nope. Haytham loved his father despite his ties to Assassins just like how he loved Connor. Jenny hated Edward's lifestyle because it brought her so much pain, also, he wasn't the one who "raised" her.