Currently I can't tell if Bitcoin will reach another all time high (ATH) this period that the price is getting higher but I do believe that Bitcoin will reach there some day, just that I don't know when. However I don't suggest anyone to invest on altcoins because many of those altcoins are backward and can't tell if they will eventually become useful in future. IMO this is just another speculation cause no one is sure about there predictions.
Indeed, no one will know when Bitcoin will reach a new ATH. We can see some speculations but we know for sure no one will know.
We still haven't seen the market go into a bear market, maybe that's what concerns some people to want to enter or postpone it. Declines have occurred several times in the past, but again, that proves the bull market will still run for the current period.
We might just be hesitant, Bitcoin will reach a new ATH before the bear market comes, or we have to wait for the next cycle.