22/04 - Difficult to scan 1200+ posts, but a previous one has already stated that aircraft are certified with wheel brakes only, thrust reversers are a bonus: without them a/c meet regulatory specifications, with them they exceed it.
If you expect TOTAL safety in any mechanical device operated by man, then stay in bed - where you will eventually die anyway, - sorry to sound callous but this is a real World governed, and not too badly in fact, but economics.
That's not trying to minimise the suffering, just being realistic.