So because there are no known alternatives, we must stick with the status quo? Surely there are people who would love to be umpires and would work their tails off to become elite umpires. The fact that the ICC in effect has a quota on the elite umpire panel discourages open competition. Umpires are replaced on an irregular basis, so they feel less pressure to play correctly. I think if Steve Bucknor were a member of a playing side, he would have been dropped long ago. If cricketers don't respect an umpire out there, perhaps one should take a long, hard look at the umpire. Is it more likely that an entire team and their managements are obnoxious whiners, or that one old, tired umpire is making mistakes repeatedly?
I think Koch cha's point is a fair one. Who cares if bad decisions have "always been a part of the game". They shouldn't have been there in the first place, and now we have the technology to make sure they are not. Umpires have a very hard job, and they should be given respect by cricketers and fans alike, but let us ease the burdens on their job by making modern technology available to them.
One example from contemporary sports is replays in American football. It only started a couple of years ago, and already it has led to many incorrect decisions being reversed. Of course some have argued that incorrect decisions are part and parcel of the game and so must be taken with the correct ones, but on what grounds can that be considered a good argument? Decisions should be correct 100% of the time. No one is suggesting making robots who can be umpires, but if an umpire has some doubt about a LBW appeal or a caught-behind, by all means, let them refer it to hawkeye, or to the snick-o-meter/ultracam, or to the TV umpire. One might say, well then won't they feel the pressure to refer every call? No, some decisions are simple, and if the umpire is at all unsure, shouldn't they do their best to make their minds up correctly?
Let's not embrace the problems of past cricket and try to perfect our game as much as possible.