I'm like maestrocloud, I enjoy referencing and find it clears my head a bit. Plus there's something satisfying about sorting out your references - it's a relatively straightforward thing to do if you're not up to doing anything that require major amounts of thinking or if you're stuck on a complex problem doing references can help you work the problem out.
But then, I love books and reading and am working as a bibliographic assistant and part-time evening assistant in my uni library so I'm kind of quite good at the referencing stuff and find it easy.
And the point is, you DON'T leave the bibliography to the end, you keep notes on it as you go along, so the most work you'll have to do is typing in the details of a dozen or so references. If you're doing a larger project you absolutely have to do it as you go along else you'd never manage it.