Why do we cling so strongly to tradition? The answer is, in a way, obvious. That's what we've always done. But there's something deeper there.
We follow tradition because our very selves are molded by others. And we automatically know that we are not as experienced as others. So we follow their example, go with the flow. We create memories that become our real reason for doing tradition. And stupid traditions that we don't even like? I can't explain every case, but it's because we hold on to things. We're afraid that if we let go of something significant in our past, we'll let go of a part of ourselves. Not to mention the fact that we are attracted to rules. Humans talk about freedom, but we really can't get along without making some rules. There is no such thing as absolute freedom. We are always accountable to ourselves and God.
And perhaps tradition is one of the rules we make for ourselves, to anchor us down. Something to hold on to so that we don't get lost in the world. Of course, traditions aren't the only ways to do that, but they are one of the best.
Whatever happens, we will always create traditions. They may be family traditions, they may be little rituals you do to decrease your sense of loneliness. But we are drawn to rules, and a tradition is a rule that some never tire of.