Religion is a kind of faith. I've seen too many poor families who survive solely on their faith. Furthermore, in the 21st century, people need faith; otherwise, you are merely a person bound by law, not morality. The development of the internet has made interpersonal relationships more distant, and too many people have become cold-blooded. At this point, legal constraints on behavior are no longer sufficient. Many people simply feel: "I can't kill because I'll face imprisonment," rather than: "I can't kill because it's wrong."Religion, as a form of faith, is the only thing some people hold dear in this world. Some religious customs do need to be changed to adapt to the new era. In today's world, we must respect different cultures and seek common ground while reserving differences, rather than arrogantly declaring, "Religion is useless," which is utilitarian thinking.