For me bitcoin as the face of digital currency. When you meet someone and you want to tell them about your digital currency you should first mention bitcoin. You can not mention all the coins, but at least its history will be traced to bitcoin. Even if it never scales it would be a great store value, people would buy it and exchange it with other cryptoes, especially ethereum or dasboard, because they want faster tractionactionIf the bitcoin doesn't scale anymore maybe the bitcoin does not become famous and maybe we haven't forum now. Maybe bitcoin will more powerful in some day. If bitcoin doesn't scale maybe other money or coin will release and it being famous.