The Saints came from us, and so must be included. Do you think that Christ, Buddha, Ramakrishna and Krishna found peace? If they did, then the potential must be in all, since all are made in the image of Spirit.
The Christ alluded to this when He asked us to be perfect and also told us that we would do greater works than Him. The Buddha encouraged Ananda to continue and Sri Krishna taught Arjuna on a battlefield.
Why teach what is impossible to attain? Why speak of Love and ask us to be imitators of Love if it is impossible? Indeed, why should Spirituality persist for so many thousands of years?
If you ask me to swim and I tell you that I do not wish to enter the water, then I will not be able to swim. If I seek peace and you ask me to pray interiorly and externally; to meditate and to serve my fellow humans selflessly, ceaselessly and daily without fail, in one form or another, then I would do so.
In the same way that I did not learn to swim, so too I will not find peace or indeed, I should not judge you, at least until I try your ideas for peace. If I do not try, then who am I to complain. We need many seekers of peace, as perhaps the seeking itself will eventually answer your question. I bid you God speed!