[Opinions] As I've already mentioned, I love the name! (m)
But I think it depends on your other children's names and where you live and how live to make such an old-fashioned name sound cool. I can imagine me using Wilbur as a mn (to Rufus, for example), but not as a fn, there are simply many other names that I love more. But I'd love to see Wilbur used more often, definitely!