I also buy some BTC in 2015, and sold them for profit of only $50 or something like that - then it seemed quite normal thing, but of course I failed to see the big picture and understand the potential of BTC.
I can understand why someone would've offloaded when Bitcoin hit $1. It was still a pure experiment that could've crapped out any second. I've no idea why anyone would do it at any point after that unless they needed the money.
The price action was of course pretty dire and boring in 2015 but 2014 was heaving with amazing developments that pointed to nothing other than an amazing future. All the same I remember a lot of users declaring $300 would never, ever, ever happen again.
Bitcoin fans have always had a problem conceiving of its scale. Some think it's vastly bigger than it actually is. Others can't see beyond the end of their own private key and fail to perceive all those millions of people and machines who'll be beavering away no matter what the price is doing that minute.