Objective reality and death

I guess you have probably heard about subjective reality. You are and born and temporary lose your memory of your previous life outside this reality, you grow up, play with your life a little bit, grow old and die, therefore returning to the your real life where you origin from.

But let's take a look at the objective reality and death from that perspective. Many of us think that death is something painful, cold, when our lives are lost and over, etc. We all think our lives are precious and should be "used" correctly. I completely agree with that.

On the other hand, however, I don't agree we should play safely by the rules, so that we don't screw up the one chance we have on this precious Earth. From the day I remember, I couldn't understand why are there silly rules in this world like unwritten social rules and especially laws.

Instead, I believe if reality was objective(I actually believe it's subjective) and there would be no God, afterlife or similiar, how we lived our lives wouldn't matter at all after we died.

While I don't believe we should live our lives in anarchy, ignorance, slacking off all day and not caring about anything that's going on around us, but we should not worry too much how we live our lives.