Should trust be earned or given?

I believe it's healthy to give trust but it seems it's evolved to trust being earned for the most part and that only leaves us with the question, is trust being earned a form of evolution or is it just us devolving? Cause it makes sense to think that only a healthy mind would give trust until it's broken cause without a proper reason, there shouldn't be any complications to trust someone that hasn't done anything to you, but that can eventually lead to gullibility and everyone knows gullibility is for the most part a weakness which point to this change being a form of mental evolution but isn't that making trust more complicated and harder? Which points to it being a form of mental devolution, so which is it?
Should trust be earned or given?
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