I understand that a lot of people use the terms investing, trading and gambling in similar ways, yet I still find your use of the term "investing" to be an inaccurate description in regards to what is happening, and how folks gamble/trade with various shitcoins, and sure it is possible that in some cases, some of the guys may well be attempting to take a longer term position and to hold onto the coin with thoughts that it has some kind of fundamental value, rather than just attempting to play pumpamentals.
With either the Trump coin or the Melania coin, there were potentials that the coins related to more than just short term pumping, yet a lot of the times the ones who get screwed the most are the ones who are deceived into believing that there is any kind of a long term investment thesis, whether referring to Trump coin or any other shitcoin that merely talks about all the things that it is going to do in the future based on their team of experts and/or blah blah blah stated or implied backers.
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I don't like to hold altcoins or memecoins as an investment. I don't see myself holding coins like Trump, Melania, Pepe, etc., because in addition to being extremely volatile, they all depend on Bitcoin's variation in the end. This can be advantageous for those who understand market patterns and behaviors to accumulate more capital through probabilities that favor their strategy.
However, I like the idea of using it as a way to obtain more bitcoins, through spot or leveraged trades (although it's extremely dangerous if not used with due caution).
Sometimes, I use altcoins like LTC to save on withdrawal fees, which are cheaper compared to the BTC withdrawal fees set by the vast majority of exchanges and then I swap the alt back to BTC.