I think this needs to be considered in the light of probable risk, which is negligible.
There has in the last 20 years only been one take off accident at Luton, G-AVGW (HS 125) in 1967, on a training flight.
I hear what you are saying but there is always tomorrow
YouTube - Aborted takeoff
A 1000 extra available feet could be the difference between life and death.