"Sure I guess. There would be no harm in me trying out your advice. I doubt anything would change though. However, even though that's how I think of it, I still trust your judgment," Yuki replied to Zero before ending their conversation since he was done asking questions for now.
Although what Zero said had a high likelihood of being true, Yuki still doubted it. The main reason for this was because he already had the tools to accomplish what he wanted. It didn't matter what the task was, all Yuki had to decide was how much effort he would put in on his own before passing the task onto either Zero or One. As such, Yuki never had to worry about trying to his maximum capabilities as he never had to. He didn't have to face fear of death, every obstacle he faced didn't matter because he could either try to get rid of it on his own or he would call on a being which broke all the laws of nature and could do anything which his master sought.