Melee is stupid. (in a way)

I love playing melee biotic... 
but the game does not reward better control by player.

We are humans.
We get joy out of learning new stuffs and getting better at things we enjoy.

...Melee biotic is fun. The game even promotes us to play it such way by giving us tools like drain punch and Juggernaut shield.

But what`s the point?

Half the time
perfectly placed Jump landing punch won`t damage the enemy.

Half the time
perfectly placed downed punch won`t damage the enemy.

Half the time
The punch does not happen because it refuses to happen. 
Somebody forgot to take their parkinson medications?

..and everytime that happens the very enemy who should have died slap you in the face with their bullets. 

No, I am 100% sure it`s not the lag issue.

It`s either glitch or intentional programming to protect enemies to make things harder.

I should be rewarded for perfectly reacting and controlling my character, but the game simply refuses to do so.
For god`s sake the dog`s sync move should never punish player by canceling whatever action we are doing to avoid their biting. 

So.. I am playing an action game that does not reward me for learning and getting better at controlling my character. 
Very disappointing... and discouraging.