Personally, I don’t understand what people found in this project except for anonymity. After all, there are so many other projects in which Blockchain is much better and more promising, and also has a high transaction rate.
You do have a point there, mate. However, even if there are other privacy coins with greater transaction volume (like Monero), Zcash is unique because it was the first privacy coin to provide a revolutionary tech known as Zero Knowledge Proofs. Such technology is being developed over time, to make it as robust as possible for privacy-centric transactions. Of course, at its current state, it requires a trusted setup (ZK-SNARKS) but it's hoped that Zcash would improve over time until it eliminates the need for a trusted setup (ZK-STARKS).
Zcash was overhyped at launch with prices above $1,000. While now it's way below that valuation, it has the possibility of increasing in price over time due to its finite supply. With only 21 million coins that will ever be mined (like Bitcoin), Zcash could be well worth the investment nowadays. It's interesting to see ongoing development for the Zcash project, as it has upgraded to the latest Sapling version which provides lots of improvements. This proves that ZEC is still active in development and innovation, despite prices tanking these past days.
Nevertheless, only time will tell us if Zcash is a privacy coin that’s worth investing in it or not. Just my opinion