Absolutely, hold long term. Getting scared out is normally what the whales want.
I feel like if we continue to be in a bear market through 2018, the bulls will come back around December, like they did ending 2017. I would give a small chance to stay in a bear market until mid 2019.
Anything is possible though, and I do not have a crystal ball. If I did, I would be sailing my 60ft cat around St. John right now...!