1980's Interest Rates
This is an ad from the Salt Lake Tribune in 1985. The "all-time low rates" were about 12%. If you were to look back in time to when rates were between 12-18% would you have still bought, knowing what you know about the future? I think almost anyone would say yes for two main reasons: 1. Prices have come up so high since then. 2. When interest rates came down, people were able to refinance to the lower rate.
I'm not sure what our future holds. But I do know the people that try to time the market statistically do worse than those that simply "get in the game" when they can.