That is so depressing. I'm not saying you're wrong, or wrong for saying it, but it's still depressing. For years I've taken pride in my ability to see beyond the code I'm working on, to how that code or other activities (e.g. teaching or even blogging) can contribute to business goals and/or make the computing world a better place. It's what we're supposed to do. We're told we'll be rewarded for it, and sometimes we are financially (thanks boss), but it still takes its mental and emotional toll. Others will undermine your efforts with a competing project or contrary message, or outright pull a project out from under you, often with the best of reasons or intentions, but it still leaves you feeling betrayed.

To end this on a more positive note, consider this: "we're not here to make friends" is EXACTLY WRONG. The friendships you make are the only thing that will last. The "legacy" of your code will become smaller and less valuable over time, even if it's really awesome code; more likely it'll just be tossed aside without a second thought by the next developer or exec with their own agenda to pursue. Your money will be spent. All of the companies I worked for twenty-plus years ago, their technical and financial assets gone as though they'd never been, but some of the friendships I made back then continue. Make code, make money, make friends, but only one of those will last.