> Luck doesn't exist.
Or maybe you're just lucky enough that you've never been in a frame of mind to notice its absence?
I know nothing of you as an individual, but if we define "luck" as events unfolding in your life beyond your control in a positive manner it's absurd to say it doesn't exist. We are all brought into existence either lucky or unlucky, relatively speaking. Were you born healthy, attractive, tall, rich, smart, with loving parents with a stable income, in a first world country? Or were you born poor, diseased, addicted to crack, and into sex slavery?
Yes, there are things you can do to improve your lot in life, but saying luck doesn't exist is a harmful truism. You believe it because it makes you feel in control of your destiny, not because it has any basis in reality.
Tell me how you feel about luck after being diagnosed with a terminal illness that will make the rest of your life miserable and deplete the savings you pass onto your grieving loved ones.