One theory for what happens when the reward drops (i.e. no new bitcoins are rewareded anymore) is that the already high fees will further increase. If that is n

One theory for what happens when the reward drops (i.e. no new bitcoins are rewareded anymore) is that the already high fees will further increase. If that is not the case, the competition will lower and Bitcoin will become unsafer because it is backed by less mining power.