Zcash is a decentralized open source cryptocurrency, just like almost all cryptocurrencies. Zcash pays great attention to confidentiality. This means that the sender and recipient transaction values are hidden in the block chain. Zcash is often compared to another cryptocurrency protected by privacy and security, the so-called Monero . Zcash operations are extremely fast, and sometimes it takes only about 6 milliseconds to validate a transaction. If you like monero cryptocurrency and you invest money in It, Zcash will be a natural choice for investment. They operate on very similar principles, and if the value of Monero increases, the value of the zcash for too increase. Investing in Zcash or Monero is certainly more risky than allocating your money to the stock market, but in the future it can also bring much higher returns.
Agree. ZCash is often good for privacy, as it was the first implementation of Zero-Knowledge Proofs in a cryptocurrency. While not perfect, it solves Bitcoin's problem of fungibility by a long shot. Of course, zk-SNARKS require a trusted setup, which is a threat to decentralization. But, if ZCash adopts the new zk-STARKS technology, then there would be no need for trusted setups, allowing for greater privacy and improved performance on the cryptocurrency.
One thing for sure, is that ZEC has been quite slow in development when compared to other leading coins in the market. Most anon coins like Monero have an official GUI wallet and cross-platform support, while ZEC is having a hard time to do so. Despite this, it has been slowly increasing in value, which means that it could become worth $1,000 and beyond over the long term. The competition would be fierce among many known privacy-centric cryptocurrencies like Monero, ZCash, Komodo, and Dash. Only those which have leading technologies are most likely to succeed in the long term. Just my opinion

I agree that the ZEC is slow in dealing with the threat of the ASIC mining. It will harm its long term future.