This graph allegedly depicting "sexual market value" over time is often posted online. It's a total fabrication, not based on any data, only the wishful thinking of its creator, an aging "bachelor."

Male SMV does not peak at 36, when the average 36 year old man is fat, bald, and wrinkly, nor does Female SMV peak at 23, by which point they are already fat, tattooed, and have double digit body counts.

F SMV peaks pretty much as soon as they reach physical sexual maturity (adult-like secondary sexual characteristics).

M SMV peaks a few years later due to slower biological development and female desire for wealth/status.

F SMV is more fragile and time limited, but both M & F SMV decline quickly with age.

M & F SMV decline can be somewhat mitigated by not ruining your body; far more important for women, since their body is basically all they have to offer.

M SMV decline can be mitigated to varying degrees via wealth/status, but women who are obsessed with male wealth/status are generally... not wholesome.