地铁里，没有人穿高跟鞋了

Core Viewpoint - The discussion around high heels, particularly in the context of airline staff, highlights a shift in societal norms regarding professional attire, emphasizing comfort and practicality over traditional notions of beauty and professionalism [1][6][18]. Group 1: Industry Trends - Airlines such as Spring Airlines, Shandong Airlines, and Juneyao Airlines have begun to allow flight attendants to wear flat shoes, reflecting a broader trend towards comfort in professional settings [1][6]. - The global sales of high heels have been declining, with an annual decrease of 1.5%-2% from 2019 to 2023, indicating a significant shift in consumer preferences [18][21]. - The fashion industry is witnessing a move towards more casual and comfortable styles, with high heels increasingly seen as incompatible with modern lifestyle demands [11][12][19]. Group 2: Cultural Shifts - High heels, once a symbol of femininity and professionalism, are now often viewed as "instruments of beauty" that can cause physical harm, leading to a cultural reevaluation of their place in women's wardrobes [7][17]. - The portrayal of high heels in popular media, such as in the film "Sex and the City," has shifted, with contemporary narratives focusing on comfort and practicality over traditional glamour [15][18]. - The rise of alternative footwear options, such as sneakers and casual shoes, reflects changing attitudes towards fashion and functionality, with high heels becoming less common in everyday settings [10][21][24]. Group 3: Market Dynamics - Brands like Christian Louboutin are diversifying their product lines to include non-heel options, recognizing the declining demand for high heels [18][23]. - The market for high heels is becoming increasingly concentrated, with only a few brands like Christian Louboutin and Jimmy Choo still experiencing growth amidst a broader industry decline [22][24]. - Investment firms are viewing high heel businesses as "non-performing assets," indicating a lack of confidence in the future profitability of this segment [23][24].