Social stratification and social media disengagement. The effect of economic, cultural and social capital on reasons for non-use of social media platforms

•Cultural, economic and cultural capital are related to reasons non-users in Flanders give for not using social media.•Access is a significant obstacle for those with low levels of cultural, economic or social capital.•Self-presentation issues are positively related to cultural, economic and social capital.•Education level (as a specific indicator of cultural capital) is negatively related to both technological skills and technophobia (fear of making mistakes).•The higher educated list privacy issues and a lack of time more often as impediments to social media participation.