The perfect time to invest in bitcoin was yesterday but the second best time is now there is nothing wrong to invest in Bitcoin now if the money is available to do so -snip-
As the price increases, the chances to multiply your money like in the early days decreases; but when so many big investors, companies and even governments are buying large sums of Bitcoin, we have reasons to think that buying now is not a bad idea after all.
So yes, better today than tomorrow: I think that sometimes it is riskier not to dare than to pass, and that this is exactly the case with BTC.