As the Batman, Bruce couldn't afford to let his guard down regarding your safety.

The decision to marry him had already greatly undermined your safety by making you a target for Bruce's enemies, so he kept his eyes on you. That’s why you two often argued.

“I just care about you, is that so hard to understand?” Bruce raised his voice a little during one of your regular quarrels on this matter. He loved you and would not forgive himself if something happened to you.