Nature doesn't care what you want, if you want to change something then it requires action. If you want to protect the crippled infant antelope from the pride of lions, then step in and save it.Sure, we can all agree that's how nature is. But that doesn't make it a good thing. Handicapped people would starve to death in a "natural" mesolithic world, but we generally don't want that to happen now.
If you want to protect biologically unintelligent people (<85 IQ), the poor, those ignorant of the law and court legalities, the confused elderly, or anyone else you think doesn't have the ability to have a fair trial, then you kick up your money and pay for it. Donate money to foundations that provide quality legal assistance pro bono to the "disenfranchised."