Popcorn ceilings, leaded gas, and other inventions that have "done more harm than good," according to Reddit

"What invention has done more harm than good?" Two days ago, redditor idc_aboutusernamesposted this query to r/AskReddit. With 27,000 comments so far, the following are some of the answers ranked "Best" or "Top":

• "Popcorn ceiling."
• "Those plastic containers that are like crimp plastic stitch welded around the entire edge and it's super thick plastic that will slice your shit open."