When Bitcoin reaches 1 mil. $ eventually, you will cherish the current price.
Think of it as the price of $1, but just currently - because eventually, we will see big results for our investments too.
Nothing wrong with cherishing the past, but we don't need to forget about the present.
Every price someone misses in bitcoin is what they will regret in the future; what you consider to be a high price is what others consider to be buying cheap. You buy at every given time because you don't know what the price will be tomorrow; anything is possible in Bitcoin. I pity those who don't take advantage of the current price now.