I invested a little bit of money into cardano. I have a few thousand coins. It seems like a great project. The team behind cardano is great. The roadmap I believe is a little long, so you have to be patient. But cardano is blockchain 3.0. It's going to be highly scalable and interoperable with other coins. Unlike many coins, cardano is built from scratch and is not based on ethereum or some other blockchain. They are building it from the ground up with the best features. Overall, a good long-term investment in my opinion. I'm not giving financial advice, just my opinion.