Even if one does not believe in God or guidance of the living prophets, there are still good reasons for modesty in dress & actions, including in media.

• The goal: lasting happiness & well-being for individuals & families, avoidance of addicting and destructive behaviors and examples.
• Studies, history & life observation & thought should bear these out:
• Immodesty leads to lustful thoughts...
• ...which leads to sexual thoughts and/or activity outside marriage
• ...which leads to sexual behavior outside marriage
• ...which leads to pregnancy in the unprepared, single parents, poorer care for children, broken families, life-changing diseases, loss of trust, hurt all around
• ...which leads to greatly higher risk of many huge problems that are hurtful to individuals, families, generations, and costly to society and government
• Some have said and documented that the road to success (even just economic success) in life starts with doing THE RIGHT STEPS IN THE RIGHT ORDER
• I read (some time ago) that in all rape cases someone studied, the mental state of the perpetrator began to be that way with pornography
• (That includes "art" which is seen as porn -- which is probably how every young, curious boy, maybe girl I don't know, will view such art).
• References
• If we want to make the world better, maybe we can all practice at honesty, and the Golden Rule, and encourage others to do the same.
• How I learned God is real & cares (and you can too), and I find that extremely helpful in life: many long-considered reasons for peace and motivation, even...
• Clothing, media content & behavior, especially immodesty, violence, dishonesty, all non-overt messages, and nudity/porn.