It is such a nice feeling when someone is kind enough to wait for you to get to the heavy. Understandably, there are times when taking it for yourself is necessary, like if the enemy is about to get it. Even in Strikes, in the Undying Mind and Sunless Cell Strikes people have a good habit of waiting for the others to catch up if they are ahead so everyone can get the heavy, really nice to see in both PvE and PvP. I definitely always wait as long as I can.