IMO, time is extremely expensive in crypto world. Entering crypto world one year later and that is the opportunity cost. Lets see Bitcoin price in one year time, maybe we are seeing the news reporting a similar situation for example $5000 Bitcoin in 2017 and $20,000 Bitcoin in 2018.
not until mass adoption it is not.
you could have said the exact same thing all the past 8 or 9 years and be wrong the same way you are wrong today. obviously the sooner you join in, the more you benefit and the longer you benefit but it is not yet late until bitcoin reaches the mass adoption stage. 1 satoshi is not even a valid value in fiat yet so you can be sure you have a lot of time. the same way back when price was $200 in 2015 or $500 in 2016 or $2000 in 2017 or $6000 in 2018 none are late.
but when you saw everyone in the streets know about bitcoin, and price is so high that you can talk about 1 satoshi and give a real value in fiat then it is late.