Not too late. Although the price might seem high today, imagine you bought in at $7.5k and it goes up to $25k, you'd definitely be glad you invested!
which I do in bitcoin investments keep it up for two years or three years. no matter what bitcoin prices are in today, I am eager to invest in the long run and hope to make a big profit.
I do not know about the future but for the current time I agree with your point that no one have to think about that how much the time passed but they have to invest any amount they have because it is now the initial timing of bitcoin and now more and more people are involving in bitcoin and with this process the price of bitcoin is increasing more higher which is expected to reach to a more highest value from today.