I have similar testimony as you, the only difference being the time of entry because you seem to have started earlier than me. I can say it for certain that the DCA method is the most powerful approach I have seen regarding investing.
The DCA method is a good way to invest especially with Bitcoin. It is nice to know that you have ve had a good experience with it.
I used to think that it was too late to invest in Bitcoin since the price has gone up so much. But this few months of using the DCA method have proven me wrong. My mindset changed when I realised that my Bitcoin portfolio have grown into something significant when I do not even feel I'm putting money somewhere because I calculated my DCA amount in such a way that I will not feel any stress.
There are much people get worried about investing in Bitcoin (not only you) because they think the price has already gone up much. But with the DCA method they can invest in a more relaxed way. Instead of putting all their money at once spread it out over time. This help them deal with the ups and downs of the price and can even make more money in the long run.
I feel a lot of people are still having this same challenge of thinking that Bitcoin price have gone too high for their investment consideration. Anyone in such a situation should just give the DCA method a try and see how it will pan out six months from now.
Exactly this is the best way to teach them and if anyone will start this method so with passage of time he/s will understand the how important it is and they will be in profit after 3 to 4 years uth they will continue this strategy for long time.