No, it's not that people want to have it both ways. No one wants an innocent man convicted either..There again, prayer to God to prevent or stop that from happening! There are missing pieces to the puzzle, and the speculation, filling in the blanks...is imagining what the puzzle pieces are that are missing..and doing that is based on the rest of the puzzle pieces that are known. For example, The theory about the parents doing it would have a bit more validity if there were no blood and fibers in the MH, and dw's behaviour wasn't so different to the dry cleaner clerk ..that is based on known evidence.
I understand some of your alls theories as well...like danielle sneaking in the MH and bled a few drops. At this point, are we to assume that she went in by herself cuz there are no known playmates that have gone in there???