I think is too risky to invest in meme coin, and that's all.No use case? I don't think so, does Dogecoin no use case? As long as the consensus of meme coin is strong enough, it may also be used for payment, but is very very hard i think. By the way, i don't think those are named technical coins have any use case, for example, eos. In a word, i don't suggest buy meme coin just because of the risk is too high.