Use of runners

I've always reckoned the rule allowing a batsman to use a runner is stupid and unfair and it's about time it was canned.
If you're not fit to fully perform the role of a batsman then you should retire hurt. Alternatively, take your chances at the crease in holding up an end and try to hit boundaries. Otherwise get off the ground!
The runner is always at the ready to sprint off for a run and unlike the batsman, doesn't have to contend with the pressures of actually taking strike e.g being forced to fend off short deliveries etc. It's not a fair substitution.
It also ads unnecessary complexities to the game which can sometimes create confusion e.g. runners standing out of their ground while the striker is in his, running from wide out at square leg etc.
It's a stupid rule the game doesn't need.
If you're not fit to fully perform the role of a batsman then you should retire hurt. Alternatively, take your chances at the crease in holding up an end and try to hit boundaries. Otherwise get off the ground!
The runner is always at the ready to sprint off for a run and unlike the batsman, doesn't have to contend with the pressures of actually taking strike e.g being forced to fend off short deliveries etc. It's not a fair substitution.
It also ads unnecessary complexities to the game which can sometimes create confusion e.g. runners standing out of their ground while the striker is in his, running from wide out at square leg etc.
It's a stupid rule the game doesn't need.