Why give anything meaning?

[Zeldor]

At first I though nihilism was really bad, because it meant that nothing has meaning.

So there's no point in doing anything.

Then I thought it was great, because it meant that I choose what has meaning.

So you should do what you want to do.

Now I question why I should give anything meaning, and have come to the conclusion to do what I'm going to do.

But while this seems logical to me, it also fills me with unease.