Ought we not then to be silent about free-will, and good intentions, and fancied preparations, and merits, and satisfactions? There is none of these which does not claim a share of praise in the salvation of men; so that the praise of grace would not, as Paul shews, remain undiminished. When, on the part of man, the act of receiving salvation is made to consist in faith alone, all other means, on which men are accustomed to rely, are discarded. Faith, then, brings a man empty to God, that he may be filled with the blessings of Christ. And so he adds, not of yourselves; that claiming nothing for themselves, they may acknowledge God alone as the author of their salvation.
In reality some have faith and some don't. Those who have faith were given that faith by God. Those who do not have faith were not given it by God. Would you disagree?
It isn't that man doesn't have free will. He just cannot exercise it. As far as Calvin being a coward that I don't know. But he certainly wasn't as bad as some of the Popes who ran out of the Vatican when people were storming the gates. So much for the chair of St. Peter.
I'm sorry to laugh out loud at you, but please...you're lurching into the absurd.