I hate a loose bracelet. I'm very active so I can't have the watch flopping all over the place. I hate it when everytime I move my arm it slides down my arm. I just have them snug but not tight so they don't move. and it drives me crazy when I see someone with a loose bracelet, they are constantly shaking their arm so the watch goes back down to their wrist in the right spot.
Loose bracelets drive me nuts, can't do it, won't do it. Snug with enough slack to (barely) fit a finger in between the band and my wrist is perfect for me.