Why did Theseus refuse to go to Athens by water?

Theseus refused to go to Athens by water because he wanted to demonstrate his bravery and strength by traveling overland instead. He believed that this journey would allow him to confront various challenges and dangers, showcasing his heroism and solidifying his reputation. Additionally, he wanted to avoid the risk of being captured or ambushed by enemies at sea, opting for a more secure and noble approach to his arrival in the city.