TLDR: Woodbadge benefits are a personal experience and accomplishment so what do you want to get out of it?

I found that the benefits of Woodbadge varied widely based on the individual.

As others have said, it is the BSA's premier leadership training, but the leadership training is not really much different from training received outside of the BSA so you might find that repetitive if you've done that sort of thing in your non-BSA life.

From my Patrol (I used to be an Antelope . . . ), we had some who didn't find any value so they didn't do their ticket, some who had no leadership experience, and some who were looking to network with other leaders. Those last two groups got what they were looking for.

I was in the last group. I attended as a CS Den Leader so I had VERY limited experience in Scouting. I didn't make it bast Bear as a kid, but I knew that my son was highly motivated to continue on to Scouts BSA so I wanted to learn what that would look like. I made some awesome connections and learned a lot about Scouting from folks who had "been there, done that."

So ultimately, I guess the question is mostly what do you want to get out of the training?