I am developing an iPhone app. Since I upgraded from Xcode 5 to Xcode6, it's been hell. Xcode 6 would crash for no reason at all, and each crash would leave my code in some inconsistent state: where some of my pre-crash work is saved and some others aren't. After many of these crashes, I updated to
6.1 does not crash but it does something worse: whenever I change one thing, anything, in a xib file or in storyboard, something else, completely unrelated, is automatically changed. It's like Xcode has an imbecile mind of its own. If I add a UIButton, some UIView somewhere else, could be in another UIViewController, will resize, or disappear, or change state in Attributes Inspector, or lose an IBAction connection. So yes it's a wild ride. The reason I needed Xcode 6 is so that I could develop for iOS-8. Anyway, now I am ready to uninstall Xcode entirely and then try re-installing. But I don't want to break my entire computer. So, someone with knowledge, please tell me, are there any dangers to uninstalling Xcode?
No, it's definitely not dangerous.
You should be able to remove any additional installed program from your Mac by simply moving it to the trash without breaking your Mac. Since Xcode 4 Xcode can be counted as a standard self contained Mac app that can simply be (re)moved from/to your Mac.
Even the commad line tools should stay installed.
(Did you tried deleting DerivedData? That solves nearly every problem you can get with Xcode)