I'm no professional, but I do understand the need for privacy and the fact that people don't like to be watched. Privacy coins like Monero, Zcash, and Dash allow for security in transactions not just at a personal level, but from a business standpoint as well. Unlike with bitcoin, privacy coins don't allow tracking of purchases of other people's wallets, so you can't use information about other transactions or the amount of money in someone's wallet to influence their business decisions in negotiations. This makes these coins very valuable for those those that want quick, anonymous transactions on the blockchain.
Sorry for this being so short, but school started back and I still want to get at least something posted. I don't want to repeat what happened when I first started. This is a year of change for me.