Could have + past participle means that something was possible in the past. As a boy you had the ability to do something in the past, but you didn’t do it.

Should have + before participle can mean something that would have been a good idea, but failed to do it. Everything you do and do is like what you’ve had to make a decision about what should you do now for the past to be remembered. You’re not a good person and you’re not respected, nor can you really appreciate another person for being someone?

What does the term ‘would’ (and will) want to mean?

In my case, using “would never have been led to” instead of “should never have been led to” will make the meaning of the sentence change. They are not like English

words.