I was drawn to Bi-wire; looked it up in Get Better Sound and went with it on my former Marantz / B&W (IA/Speaker) 2 channel speaker combo. I was never able to "measure" an improvement, but it gave me peace of mind.
I've since upgraded to a McIntosh IA with Dynaudio speakers; neither of these offer the option to connect by Bi-wire. So I guess if the better components don't see an advantage, then its probably just fine to do without. But I'd probably still do it if the option existed 😉