"For heaven's sake, why!? What for? All this... uh, dung? What the heck am I doing here?"

As regards Your life, You might come to ask such questions, but be sure, they make no sense whatsoever - in the sense that there's no answer - in the sense that whatever answer you may come up with, can and will fail in certain imaginable circumstances. But they are indeed indicative of something in You - of Your condition, namely.

But this you knew already, right?

Then, how could I be of Help, if You come here with such a trouble in Your mind?

I could say, it'll pass - but it might not pass. You might be stuck with these questions to the very end of your life.

I could say, go and have a drink - and that might help somewhat, but it probably doesn't cure You. (Though, who can say for certain. Try it, at least, if you have a pleasant joint, nearby!)

I could say, do some drugs, but I won't. Not because they wouldn't help you. In fact, I know a lot of psychotropics that with all probability would cure your problem, and cure it instantly. But then, I'd not be writing this, if I'd want to put you in a queer position - which is the downside of chemical teleology. Namely that, often, you're pretty much out. (Of everything but.) - Unless, of course, you have a circle of trustworthy people around you to share the joys and upheavals of psychotropic experiments. (In that case, I believe, you have something of true value in your hands, and I dearly hope you may hold on to it, all the way to the end.) In the opposite case, however, the best I can tell you is to go and acquire knowledge of the vast field of psychotropics and their complex relationship to human mind. (Which transcends all, including Erowid's, databases, but there's a place to start, if you're not well-acquainted with the subject.) When you're ready, and aware, be sure, I'm not there to hold you back.

Alright, I could say a lot of things... like - get involved! - But then, in most cases, I'd only be striking in the heart of the problem. "What the hell am I doing here?" - that indeed was the question. And this means - you know not your function in the world of your society's construction.

Do they drive their cars? Yes, they do.
Do they walk the stairs to their homes? Yes, quite often.
Do they eat their dinner? Usually.

But - what the fuck?

Alright. You're not in the thing, and it's truly anybody's fault. Fix it? Do what's you got to do. It's not like you're obliged to do anything. Do whatever you may!

(If you still patently can't think of anything, I might come up with a one or two suggestions more - but I won't bother people with them here. Speak your mind on every street corner, and I will probably hear you.)