Should gene-editing technology be allowed for non-medical human enhancement (such as intelligence or physical appearance)?

With the advancement of gene-editing technologies like CRISPR, humans can not only cure genetic diseases but may also customize the intelligence, physical strength, and appearance of future generations. Proponents argue this could drive human evolution and eliminate congenital disadvantages, while opponents fear it will exacerbate social inequality, create a 'genetic class,' and pose severe ethical risks.