There is a big difference between "whistleblowing" to uncover domestic corruption and leaking state secrets of multiple nations.
What if the state secrets are all about state corruption?
Do we have a right to know this stuff? No.
Who gets to decide that? Are you really all that comfortable with the inmates running the asylum, so the speak? Frankly, I think the release of these documents is one of the only positive events about engaging the public in demanding good governance that I've seen in a long time
It is not our right to know private information about either celebrities or diplomats. What is said behind closed doors off the record is supposed to stay private.
I agree with you about truly private information about celebrities. But what's said by diplomats behind closed doors is said while they're being paid a salary to represent us, the citizens of the country they're representing. The widely-reported leaks, at least, seem to involve communications between people working for us.
I would like to keep a sense of privacy myself as an individual
Then may I repsectfully suggest that you don't become an employee of the public, because your bosses might want to know what kind of a job you're doing for them. I find it interesting that there hasn't been the level of partisan name-calling from the usual suspects about things revealed in the leaks. I have hope this whole affair may be a positive educational experience for the public to learn about how their governments work in their name. But that might be hoping for too much.