iin to think life means nothing?

How do you know you arnt changing the world?
Everything you touch and do has an effect. You may not always be able to see the effect but it is there. Perhaps in a few generations your future offspring does something amazing... maybe they cure a disease. ..maybe they create a great work of art... maybe they do something amazing. You will not see this happen but who knows? You may even effect people now ...people whos lives you have touched for even a brief moment. You could inspire someone...change someones view of the world... help them in ways you might never know.
your view of yourself is limited and you cant see outside your box... but that doesnt meen you arnt effecting the world.
it is however up to you if that effect is good or bad.

Have you ever seen the show doctor who? Its a favorite of mine...there is a great quote I like from the show...
“900 years of time and space and I've never met anyone who wasn't important.”
I beileave everyone is important everyone has an effect.
The joy you can create can last long after you are gone from this earth.