Che Guevara, not unlike Garibaldi, Robespierre, or George Washington (or San Martin, O'Higgins, Lenin, Mao or whoever else) was a revolutionary, and you don't make revolutions with roses and caresses. He had an ideal and devoted all his life to that ideal, and died for it. And, incidentally, he only smoked cigars
The world progresses because there is people like him (very many of them unknown). We would still be under a medieval feudal regime otherwise.
“Sean capaces siempre de sentir, en lo más hondo, cualquier injusticia realizada contra cualquiera, en cualquier parte del mundo. Es la cualidad más linda del revolucionario.”
“Sólo existe un sentimiento mayor que el amor a la libertad: el odio al que te la quita.”
Hasta siempre, Comandante!
PS. What distinguished the Cuban revolutionaries in the "mountain war" in Cuba is that they left the captured soldiers free as soon as they could, while the army did not take prisoners. In the long run, that is one of the reasons that shifted popular and finally army support toward the revolution.