Almost everyone thinks this way; people that think as you do on this matter are largely the exception. Even religious sensibilities aside, there is an inherent sense in people across time and cultures that human remains should be treated with respect and disposed of in a respectful manner. Of course if one is religious, there are additional considerations that a non-religious person or materialist probably couldn't fully comprehend.
In my post was the concept of the soul separating from the body and "moving on". That is what I believe, and that aligns nicely with my Christian beliefs. Reverence for a dead body seems pagan.