All of our horses are barefoot, I'd choose it over shoes any day if the horse can handle it. We've got one belgian/quarter cross, 3 haflingers and two arab/poa crosses (obviously the last two arn't drafts :) ).Actually our only horse that would need shoes (if I started riding/working her activly again) would be my arab/poa cross Shadow, she has become very tenderfooted with age.
With that said the team we've retired, Bill and Barney (belgian/quater crosses), they had shoes most of their lives with their previous owners; but they were in a lot of Parades/fairs/shows and they had very active daily lives so I can see where their shoes may have benifited them, being on multi and hard surfaces constantly. Now they are retired and work is minimal, our pastures are hilly and combination rocky/grassland and there are no issues.
The farrier comes out as close to every six weeks as we can get..