Is there a purpose to anything in the universe?

I still cannot understand the grand purpose of the fact that anything exists or why things are the way they are. for example, whether this planet or even our galaxy exists makes virtually no difference in the large scheme of things. so then why is it here? could it be then that the world at large has no particular purpose. then that means human life doesn't have any particular purpose either and achievements don't really matter. i've always thought everything has to have some sort of reason or purpose but that might be wrong. in 10-20-30 billion years, when this planet falls apart from cosmic forces, will "anyone" even know it was here? there could've been planets/civilizations like our for eons of years and we don't know about them. these questions will never have an answer.