For sure meme coins will always attract users. The thing is that I guess about 90% then appear to be a scam. Or simply don't get the needed support and investments and simply die. It should be produced by a really expert team with a good amount of investments. In other case it has no chance to survive.
These cryptocurrencies are very volatile, their value can fluctuate greatly. Many memcoins are created as a joke. Given that they were created as a joke, it is likely that Memcoins will attract scammers who will commit scams. I don’t understand why else they are created, so they often come and go along with the popularity of their meme.