I feel like if you are a competitive person you usually do not enjoy losing. And if you do lose it has an affect on you in some way. And people who concede the game are just trying to be efficient. Why stay in a battle if you know you are going to lose. Move on to the next one. More XP the more games you play which equals more packs. Also if you are trying to get you blessings of the $GODS event done why waste time. You have to play a total of 60 games to get maximum points.