This Reddit user has some good points:
from r/BitcoinMarketsBTC:
"Yes BTC is down -65% from it's peak. But remember it's also up +21% over past month, 206% over past 6 months, 746% over past year, and 1687% over past 2 years.
Today is just a walk in the park for us old timers. Yes many of us have made some bad trades but that's why it's important to have a holding stack you don't touch."