What you just said is not really related to global warming or climate. A dirty river that pollutes the shores and downstream.... and LA smog... and oil spill do not really affect the weather but it affects our environment and our health.
there's no religion debate in here. It's about perception of scale. "100 humans years is like 1 second to God's eyes" - I'm trying to make a point in this context because of your term "temporarily" and you know that 1 minute is 60 seconds to human but it's either 60 milliseconds or 60 years to Earth 
see above. again - we're not talking about some random occurrences. Every morning at nearly same time (because human is a creature of habit), there is rush hour on entire time zone (EST, PST, CST). When you combine the entire traffic jams on each time zone - you get a national-scale pollution. What happens when we do this for decades? It can become a global-scale pollution. Where do you think that air pollution goes to? It doesn't just "disappear."
Global Warming is simply a natural event to correct itself due to imbalance caused by many factors and mankind is one of them
