the police have yet to eliminate crime, therefore, they need to end
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the jedi order was never meant to eliminate evil, merely police it - which it was able to do generally for millennia.
the force is real, and the jedi order, knowing that not having an avenue for channeling those abilities positively is unwise, aimed to elevate the cognition of such so that one can focus on higher meaning as opposed to base primal urges . core of the light v dark has largely always been selflessness v selfishness, which can be an extremely difficult path to navigate by most without training or guidance.
how self-proclaimed star wars fans can toss aside the order is a mystery to me and would have gotten you laughed out of a room years back - should jedi consider adjusting some viewpoints, possibly, but many of their root ideals are more than philosophically sound and a means to assist those with great talent and little experience is certainly warranted.