It depends on what amount and what altcoins we are talking about. Everything is relative, you can't become a millionaire with bitcoin if you have 1000$ in your account, but 1000$ is sometimes much more pleasant than the lack of it, when you invested in the wrong altcoin and it lost 99% of its value. Investing in altcoins and skillfully fixing the profit from their acquisition is a professionalism and most market players have no idea what altcoins they buy, what to do with them and when to sell them. So at a distance it turns out that it is bitcoin investing that will make you a millionaire much faster even with $1000 than some altcoins that only take your money away.
Choosing an altcoin as an investment, of course, you have to know what to choose. Don't choose Altcoins with bad development. The top altcoins are recommended. Sometimes Altcoins can give hundreds of percent profit, but also give 99% loss like you said.99% can also give an altcoin with good development, here you do not know for sure what will depreciate faster, a well-known altcoin or an unknown shitcoin from the depths of the rating.
Bitcoin may be the ultimate investment that will never betray anyone. Bitcoin is the safest choice.
People also lose a lot of money on bitcoin. For a variety of reasons. To say that bitcoin will never betray anyone is too optimistic. There's no telling which way the crypto market will be regulated in, say, 10 years from now. We can hope that things will be good, but we can't be sure for sure. Let's say bitcoin looks less risky than altcoins, but there is risk there too.
