Hello,
The feature exists in certain games, but in these games, points taken in tricks are counted immediately, i.e. they can't be lost afterwards. IN hearts it isn't the case, precisely because you can shoot the moon.
To answer some of the more specific questions asked in this topic: in spades, in real life, you can perfectly know where you are: just count how many cards you have in your hand.
For the more general topic, computer games of course bring additional confort that there isn't in real life. However, this isn't a reason for making the game easier.
IN the case of the game hearts, counting hearts and at least approximately who took what should remain your job. For the same reason, I won't add a feature to tell you how many trumps have been played in spades, tarot and other trick taking games; neither something that would let you know what you can/can't/should/shouldn't play. Otherwise you are taking away some (or sometimes most) of the game interests.
With the hope that you can understand the difference between bringing comfort, and oversimplifying games. The first is good, the second is bad.