ArtimusBena,
To say that we are wrong because we are subjective beings destroys why we can ever be right, because we are still subjective beings. So this does not explain anything, nor justify any knowledge. In other words if we are subjective beings and this makes us wrong then what makes us right?
'We get math problems wrong because our minds are different' also has the same dilemma; how do we then get math problems right? Our minds are still different. How do people better suited get math problems wrong then? Because they are subjective beings? Try again.
You state:
"Without god or anything that goes with that belief, it is possible that we would be the exact same way that we are now. Who's to know for certain?"
The way define possiblity is based upon your religion/philosophy. This may be a good time for you to clarify what that is.
Plus in response to "who's to know for certain?"; well we are subjective beings with different minds you state. I guess we can conclude that no one can therefore know anything for certain in your worldview. This is a good example of where your worldview exhibits incoherence, for you would 'know' for certain that you couldn't conclude anything for certain. As you can see your worldview destroys itself.