Just as everyone had the same idea about the rise in Bitcoin price a few years ago, everyone has the same idea about the rise in Bitcoin price today, that is, everyone has positive thoughts. As you mentioned, those who invested some money in Bitcoin a few years ago have exceeded their expectations today, so why aren't you taking advantage of the opportunity like them, despite all this understanding? You should also invest as much as you can afford.
People who are still hesitant to invest in Bitcoin may not understand how far behind themselves. Because Bitcoin is constantly surpassing itself. So for their sake, we should say that you should gain a little knowledge about Bitcoin and start buying Bitcoin immediately.
Are you referring to missing that time or missing an opportunity? Or your example can also mean that those who have invested at that time have owned a lot of Bitcoin at the present time and their investment has increased a lot. In fact, you will not be able to go back to six or seven years ago, so you should take the opportunity in front of you at the present time so that you cannot regret as before.
Of course, investing in Bitcoin has to make long -term investment and the goals must be set. We need to invest slowly until we reach the goal, that is, the investment must be continued. This requires specific income and emergency funds. They are necessary for every investor to invest.

We should keep this in mind when investing in Bitcoin