I don't think that the DEFI project has a real use case for future investment, for me it's a HYPE. but since the beginning of DEFI's emergence in the industry, they have attracted the attention of investors to join in and may be good for those who are good at taking quick profits in the Defi project.
I agree with you, DeFi's popularity will not last long, only HYPE...
It is very risky to invest in DeFi in current conditions, most investors who have been holding on for a long time must have taken their profits, it is not safe to invest in DeFi that are at the top right now.