Answer:
I have joy in bringing two together, but darning my existence! My life hangs by a thread, filled with ups, downs and resistance!
Proof you've done your time in school
Soldiers fight it but never changes.
What do people spend a lot of money on every year but never want to use it?
They're big and yet so far away, We see them at the end of day. They're small and they're above. We see them when we close our eyes, Each time we are in love.
People take me on walks and I run and have fun. What am I?