I did invest in lots of altcoins and i received many tokens from bounties as reward. I experienced that, most of the tokens turns into shitcoin or dead after a few months. Some Altcoins performed very good for a certain time then all of those lost 90-95% of values and still traded on exchange with so called volume. Thus process is continued. Even top altcoins also replaced by new altcoins. 2017 vs 2023.
Moral: I think BTC and ETHEREUM is better option for investment, Can be trusted blindly, profitable for long. Low Ranked Altcoins, Memecoins and shitcoins are just headache and reason of huge losses in long time. But anyone can invest his money wherever they want.
As if he voiced my thoughts, there are also a lot of coins in wallets that cost nothing, and how much time I spent on this is just terrible. I should have sold what I earned right away, but I decided to wait, in the end I didn't get anything. Don't make the same mistakes.
I've never earned coins from a bounty, but I can relate to what you're feeling. Because I have also experienced buying altcoins that were already registered on the exchanger, I even bought several new coins, but over time my assets fell to minus 50% so I experienced a loss, because I thought the altcoin I bought would rise again but it didn't. This is my worst experience in altcoin investment, indeed many people can benefit from altcoin investment but this requires good knowledge and analysis as well as knowing when is the right time to buy and knowing the right moment to sell.
However, in essence it is true as you said, the right choice to invest is only in bitcoin and etherum because it is proven that it continues to grow and the community is getting stronger and the fundamentals are also good for the future. Investing in altcoins is like gambling, the risks are too big if you can't analyze them well.