I registered in May 2013. It seems like a hundred years ago, not just two years. So many things have come and gone. Like everyone else I mined with graphics cards back then because that was about all you could get. We were amazed when Bitcoin was mentioned in any news media, it was very very rare. I witnessed the rise of the ASICs, security after security rise and fall, media hype, ATMs, Silk Road, Mt Gox, silicon valley investments, Overstock, and now the NASDAQ will use the blockchain. All in just a short two years.
God only knows where it will be in two more years. We are all early adopters still.