Why though? Saintly MCs spares even murderers. I hate reasons like even a murderer deserves a 2nd chance. like they should be prepared to be killed themselves if they kill others. Despite that, Saintly MCs gives them chance like who the fck cares about those innocent people who were killed. Regarding cold-blooded MCs the story mostly revolve around them. There's not much of relationships like spiritual families,friends or lover. Cold blooded MCs mostly shine in battle or revenge type stories. I like the stories like Trash Count, Omnisicient reader, and S-class that I raised where there's a connection with people. There's a balance of adventure, fighting, and relationships. Cold-blooded MCs are mostly loners or even if there is a relationship it would be either be a sworn little bro or a subordinate, not an equal relationship.
Does anyone also hate weak saintly MCs like those clearly incapable and yet they try to save others instead of asking for the expert or an MC who spares a murderer or assassin because nothing happened to him only to end for the criminal to escape and get revenge.
I'd rather have a good MC who knows how the world works like Cale Henituse. He doesn't hesitate to torture or kill the enemy.
I like a balance where a hero saves people and at the same time cruel to his enemies. Too Saintly MCs or too cold-blooded MCs doesn't have much appeal.