Ever since the rumor mill started cranking out Led Zeppelin reunion reports, we've heard a few different reasons why Robert Plant did not want to do it. While the others seemed willing, Plant has seemed quite happy with his Alison Krauss gig and is doing quite well with it, earning five Grammy nominations.

At one point, it was said that Plant was put off by all the paperwork that a tour would involve. That may be the silliest one of them all, but now it seems like he may be coming clean with the real reasons for his reluctance to put the group back together.

In an interview with Absolute Radio, Plant is starting to sound like he's letting the real truth come to light. He describes any effort to revive Led Zeppelin as an "very incredibly delicate thing to do." Meaning that it may not work out all that great when three guys in their sixties reunite and try to rock like they did in their twenties or thirties.

As Plant put it, "No matter what you do, you have to really guard the discretion of what you've done in the past and make sure that you have all the reasons in the right place to be able to do something with absolute, total conviction."

I suppose one cannot blame Robert Plant for his cautious approach to the idea of a reunion. He's justifiably concerned that it might not go as well as they would all like. One reunion gig does not necessarily mean that Plant could belt out Zeppelin tunes on any kind of regular schedule, as he would be required to do on tour. He probably feels that dropping his vocals down an octave or two would not do the memory of Led Zeppelin justice.

Speaking of memories, Plant has certainly not forgotten late Led Zeppelin drummer John Bonham, and refers to the status of the group as "incomplete" ever since Bonham's untimely passing in 1980. That appears to be another reason that may ne holding Plant back from taking part in a reunion.

Unless Robert Plant has a dramatic change of heart, it seems less likely than ever that the world will ever see a reunited Led Zeppelin, although many would argue that it's not possible anyway without John Bonham, and Robert Plant may just agree with them.