The question makes sense to answer especially during a bull market, we are supposed to wait for the ATH price for liquidating at least half of assets. Some guys still wait for the lower prices to enter the market because they missed the early train. I prefer to jump the bandwagon rather than waiting for further price drops to re-enter.
And they might keep wasting their time waiting for that moment.
Although there is a chance that the market will turn back to bearish, however, with the sentiment that we currently experience it seems less to happen this year, and we're not sure if it also will come next year. if we just have a plan to invest, why not today? Perhaps, the market price isn't too high, we can't find a perfect time to invest and that is why we don't need to waste our time either.