Now, before I answer the question posed in the headline, let's review Jordan's Law of Headlines:
If a headline asks a rhetorical question, the answer is always "no."
This law, being a universal law, applies just as well to my own post. Therefore, you don't have to worry, you are not wasting your life.
How can I be sure?
Simple, because your life is already wasted and there is absolutely nothing to do about it. Even if you're the next Shakespeare, which you're not, everything you do will be long forgotten in a few bats of the universe's eyelashes-- say 10,000 years. So, go ahead order that extra glass of wine tonight.
Q: If living has no higher purpose, what's to stop me from ending my life today?
A: Nothing, and you already knew that didn't you? But life is pretty incredible so why miss the show?
Q: Jordan, if we have no higher purpose won't we become amoral?
A: No. Morality is built into humans, like arms and legs. Changing your beliefs can be very powerful, but it won't make you a psychopath.
Q: If we're just hanging out with nothing much to do, what makes life meaningful?
A: You do. Good luck.