I follow the cryptocurrency markets closely, and I've bought bitcoin in the past. However, I haven't owned any bitcoin for more than a year, and while I may have missed out on the huge rally in late 2017, I simply can't bring myself to buy $10,000 bitcoin. Here's why I don't think bitcoin makes sense as a payment method, store of value, or long-term investment at its current lofty price tag. To be clear, I have bought (and mined) bitcoins in the past.