The consumer economy isn’t just about buying more and more stuff — there’s a flipside.

The more we spend, the less we have to save. That can make planning for the future — keeping our lifestyle sustainable, in other words — incredibly difficult.

We want to know: What’s the dumbest investment you’ve ever made — the one you’ve regretted the most?

Tell us by tweeting @MarketplaceAPM, posting on our Facebook page or leaving a comment below