Doubts and fears are very natural, and it is the nature of every human being. It is not a problem as long as we do not fall into that fear or doubt and make us never move to start collecting bitcoins in our portfolio.
It is interesting to read your words regarding "I believe that no time is wrong for an entry point to accumulation some Bitcoin" because even if that is true then an investor who buys bitcoin must hold it longer, unlike when they buy during a price decline. For example someone who buys when bitcoin hits the last ATH, then how long does it take them to be able to turn their portfolio into a profit? here requires a very strong mentality to be patient to hold it, because if not then they will be frustrated and sell it at a much cheaper price.
Not everyone can do that, especially if they're someone who doesn't have a lot of patience.
All trader ever in position doubt and fear when investing their money in bitcoin or altcoin exactly facing moment with price dropped drastically, its nature of human being how to face with their investment happening later drop or not. But don't give up for accumulating and buying bitcoin how many possibility based on our financial having. Bitcoin and altcoin trader have strong mentality and more patience facing bad moment when bitcoin drop and keep continues reinvesting if their target with long term investment. Don't give up when looking current Bitcoin or altcoin have lower price but take it as very good opportunity by accumulating as much possible not only with bitcoin but also some potential altcoin worth for long term holding.
Without meaning to say your point of view is wrong, but I don't think it applies to altcoins, precisely to all altcoins. Whereas here you don't mention specifically which altcoin you are referring to. I think bitcoin is a very promising asset for us to hold for a very long time, while for altcoins I prefer to use it as my short-term investment. BNB and ETH for example, well for these 2 altcoins I might hold them longer, but for other altcoins I don't think I will hold them for a long time. Instead of holding it for a long time, I prefer to invest short-term and when I get a profit I will immediately sell it and allocate it to buy additional bitcoin to increase the money I have allocated before.
Our main purpose of investing is to make profit, if after investing we get profit then why should I hold the investment unnecessarily for a long time. Our aim should never be to hold the investment for a long time whether we make a profit or a loss by investing. We should have fixed target in investment rather than planning that if I get this amount of profit I will sell my investment. Bitcoin Ethereum or BNB No matter which coin we invest in our main investment goal is to earn profit if we think that investing in ALT coin can earn more profit in relatively less time compared to Bitcoin investment then investing in ALT coin I think it would be a good decision to make.