We aren't saints because we sometimes make mistakes. On the other hand, we might not be sinners too because some might be regretting their choices and it brought them to better places; erasing mistakes they did before.
But we are both saints and sinners, created to fix this world, to make this world a better place to live.
"We came with risks and we are going to live with it."
At the first second, the time we were born into this world, we're carrying responsibilities towards everything; ourselves, parents, other creatures, etc. Sadly, we often forget.