Self inflected knowledge is just subjective rhetoric, so for anyone to make a blanket statement without supporting data is just talk.
If you believe that life has no logical purpose than why are you still hear wasting space, air and time my friend?
A better statement would be that you...
Your purpose or lack there of is left up to each individual.
Life present meaning when you seek meaning.
If you believe your life has or does not have a purpose you are correct either way.
You life is a direct result of what you believe you are worth.