Yeah, it is hard to use bitcoin from buying products online especially bitcoin value is unpredictable, maybe you can just convert it into fiat before buying a product online, or to those who really want to use their bitcoin to buy popcorn then they can actually watch the video on the link posted above. It will still up to us on how will we use our bitcoin. If there's a lot of way to use bitcoin that will really amaze me then they should post it here.