It all depends on the person. I don't know how promising the coin is as a long-term investment, but as a speculation tool it has proven to be a good tool.
Why meme coin has value? Because people think it has value. In doge coin I don't Know it's promising or not but many people think it has future. They are okay with dropping because they are love to buy at that prize again. There are many unsolicited advices around this coin but we alert and don't put anything you are afraid to lose.