I don't get that he's considering his bike worn out, but that he might rather ride steel, with which I can't fault him

I'd hang onto the Giant whilst shopping around. If you're looking used, it might be a little while until you find the right steed. Good luck to you.

But yeah 3k ain't no worry. So long as you don't wreck a lot and take reasonable care of your bike it should be pretty readily re-sell worthy.