Many people were happier with how they looked after plastic surgery or botox. Is plastic surgery always in vain?
To answer the question, make an argument about them being beneficial and an argument about them being detrimental. Discuss CRISPR. Consider that it is a gene-editing tool, and this could be beneficial to human evolvement in multiple ways but the big one I noticed was being able to prevent certain viruses or disabilities before a human is even born.