Don't you think han maru's father is kinda...you know, irresponsible? He left his wife and...

I think we thought like that before? Even after seeing the past maru father is the epitome of greedy and irresponsible

Irresponsible and greedy is such an understatement, he put his kids life in danger with a greater chance of him coming out dead than alive, he's a psychopath, not to mention go back to earlier chaps and look at the state of Han Marus house when he was a kid, very poor living conditions.