If it’s a match from your employer. Hell yes keep funding it.

If you’re worried about a stock market crash…. I don’t know which way the market will move tomorrow but I can tell you if you have a 10-20 year time horizon it’ll be a temporary drop (Look at the market 10-20 years ago vs now & we’ve had plenty of drops).

If you’re worried about losing your job in a recession and needing cash…. That’s more of a valid reason for not funding it for a bit.