'Ello Kirby. I see you're at work again, as usual.. -_-'. Mind if I tag along? Great, let's get started.
First off, let me restate the obivous: There is no meaning to life.
Then, the not-so-obvious: This means nothing.
This would be put best into the form of an analagoy. Imagine you wake up one day, and find a present on your door. It's something incredible (Let's say it's a PS3, and a copy of Killzone 2, just for example. Or anything you find incredibly awesome and would love to have). There's no tag attached to it. It's not there for a reason. You probably shouldn't have it, if you think about it logically. But are you going to refuse it? No! What kind of idiot are you?! It's a perfectly good gift! And you can do whatever the hell you want with it because there's no real reason for it's being given to you! So why the f*** would you waste that?! You wouldn't! YOU SHOULDN'T! Exploit the goddamn thing! Use it to it's fullest! You only get one, so why not?
Now then, as for the more recent arguement, I've got a few choice words of my own.
Let's review the facts, shall we? Your brain is a vessel, your body is a tool. You exist within your mind. Your existance is the cause of certain molecules interacting in certian ways. A thought form is created through matter. Our existance, while dependant on matter, is seperate from it altogether. We are a product of matter, we aren't matter itself. Besides, its not like we exist in reality. Pfft, that's a laugh. We exist in thought, we only experience reality, and even then, it's our bodies/mind's interpetation of reality. In truth, we don't live in the real world. We only interact with it.
In the end, it can neither be proven nor disproven.
Oh, and Kirby, CheeZe has one of the best reasons to live. Ever.
Because he can.