what is the point in goal line technology?

moderators if you could multiboard this that'd be great

but seriously there is no point in goal technology, it is only every blue moon there is controversy over whether the ball crossed the line or not, but almost every week now a game is completely marred by a bad refereeing call

It should be video evidence or nothing, as goal line tech will only help officials by such a small amount it will barely make a difference

plus isn't it hypocritical to not use video technology in the game, but use it after the game for retrospective punishments that the referee didn't call on, especially as they leave all of the bad referee calls out as he already 'dealt' with the situation