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.
Dogecoin becomes successful after it influenced by Elon Musk and other rich people but Doge coin Exists here aor almost a decade now, then why suddenly it becomes useful?
If someone don't know the fact, I just want to mention that the actual developer of Doge sold all his coins a very long time ago but its still in the circulation due to the bump and dump.