Cardano is a great project and I am a long term holder. I don't see the price going up to its all time high anytime soon, but overtime it will take a big percentage of the use cases that ETH offers. ADA just needs to meet its deadlines.
Cardano (ADA) is going to be the greatest and the number one standard for smart contacts not to mention Dapps in the future. With proof of stake and being more decentralized than many other Altcoins, ADA will be just as secure and popular as Bitcoin.