>>76542528
If we go by celebs in media and people who are collectively seen as attractive, it's definitely 30s-50s roughly. Late Youth to middle age. Men in their 20s haven't yet ripened enough usually and are basically still halfway kids, and men in their 60s are getting too old usually. For women, subtract 5-10 years, so 20s-40s roughly. Which makes sense since 50s is menopause area for them and early 20s and before mean a probable death at childbirth without modern medicine (childbirth at 21 or before is still the most common cause of death for 3rdie women).