I think everyone agrees on that, bitcoin can go up in prices at a really fast pace so I'm definitely sure that it's the best investment that someone can have when it comes to investing, comparing that to the traditional investment instruments, bitcoin also is the more accessible of the bunch which in my opinion is a really good thing because that means that it's also an investment that doesn't gatekeep on anyone, and that it will certainly help more people more than anything.
That's why it's always a recommended thing for you to hodl bitcoin because no matter how dire the things are, you'll always be able to know that in the long-term, you're going to get the best out of bitcoin and it's never going to let you down.
That "fast" part is the part that people do not really understand that very well. They see it go down and sell and they say "I will buy back when it starts to go back up", and then suddenly in a day it goes up 10%+ and they regret missing it out.
You can't catch bitcoin that easily when it goes up, it goes up super fast, I have seen as fast as 10%+ increase in under an hour, which means that you are not going to make that much money to begin with. I would suggest that the best way to go would be just keep holding your coins. We are holding something that will make you insane amount of profit if you keep holding it, and yet people are insisting on just selling it whenever they see a little drop, that doesn't make sense to me at all.