I think you are mixing up consumerism and our financial system. Debt is bad and our financial system is enslaving us. However buying things and consuming is not automatically bad. So I disagree that consumerism is enslaving us I think it is our financial system. Some things like credit cards and other forms of debt are a result of the financial system more so then consuming makes us slaves. If we consume well we actually get richer. You can be stupid with anything of course and you can be wasteful by spending on the wrong things. However the slavery comes from putting society in debt, which is an issue of the financial system.
I wrote about this here: https://steemit.com/politics/@knircky/steem-for-the-win-i-don-t-care-who-wins-the-white-house
Check it out and let me know what u think.