I would suggest that to concisely answer the question, you have to look at the big picture, not yourself as an individual.
Let's say I am using fiat money. I get paid my salary to my bank account, I pay my bills, my doctor, I buy my vacation and my sex toys.
Q: Do I have the right to keep these transactions private?
A: Of course I do! I don't anyone to be able to take a picture of my entire life just by looking at these transactions (not my friend, my neighbor, my employer or the government). Nor do I want to advertise my savings amounts to the entire world.
Q: Does bitcoin (as it is today) help me keep these transactions private?
A: No (see above). => Bitcoin as it is today can not be used as a total fiat currency replacement.
Now let's say I am an illegal materials/goods trader (drugs? child pornography? human trafficker?) or I am otherwise engaged in some criminal activity (money laundering? blackmailing? scamming?)
Q: Do I have the right to keep these transactions private?
A: NO. Authorities will have to suspend your privacy rights if you are suspect of taking part into illegal activities.
Q: Should authorities "unmask" your private transactions in such cases?
A: Yes. If you are part of an organized and lawful society you should think the same. If not, go find a place to live in some anarchist country on in the jungle with the monkeys.
Q: Can a 100% private - anonymous cryptocurrency (Zcash?) be auditable and accountable for such illegal transactions?
A: No. => Such a currency can not be used as a total fiat currency replacement.
Now you might argue that Bitcoin (or some other cryptocurrency) might not totally replace our fiat currencies but could somehow be a global-"subcurrency" that could be used for some types of transactions (e.g. capital transfer across countries). Such thing might be a possibility.
But those who dream ourselves living our lives only with cryptocurrencies, I think that a cryptocurrency that satisfies the properties "anonymous" and "accountable" will have to be invented first.
I added a poll to this post to see what your opinions are.
Exactly what I think as well... It is important to be able to see where transactions are going to and from, but if you want a healthy economy to thrive you can't be able to see EVERYONES transactions. I feel like you have to have opt-in only transparency and not default transparency. This is why Monero's view key is the best thing since sliced bread, imo.
And it's not like if Monero is best at the whole transparency ordeal that Bitcoin is obsolete... Bitcoin is good at what it does; which I feel is a 'decentralized' public store of wealth... I put 'decentralized' in quotes because I feel mining is super centralized and ASIC resistance is a big key.