That's just plain rude. Try to write a desktop environment from scratch and don't overlook any software issues, then we can talk again about "laziness". No amount of testing can protect you from that, that is also why major iterations of other operating systems (like Vista, OS X, or the iPhone OS) were anything but flawless. As a consumer you always have the choice whether you jump right in and be one of the first to use something entirely new, or wait a while until most of the kinks have been ironed out.