Exactly what Plugsy just said - so because some people don't agree with your view on what happened, you have determined that they lack any empathy or common sense.
All you have done is thread is deride anyone who has a different opinion to the hypothesis that she was abducted and branded them as people who swallow anything the tabloids say.
The fact is that the majority of tabloids have followed the 'official' hypothesis that the McCanns themselves put forward - because otherwise they find themselves getting sued by the McCanns.
Every time someone has a different opinion to you, you climb back on your high horse and pontificate.
No. I think the lack of empathy is demonstrated by the complete lack of empathy and the preference for conspiracy theory and/or feelings of moral superiority by blaming the parents. You see this behaviour all the time. Kids going missing make people scared. If you can blame bad parenting then good parents (or people who presume that they would be good parents) have nothing to worry about. It isn't even necessarily a conscious thing.
Anyone who believes anything the tabloids say (or even reads them most likely) is an idiot as they make stuff up all the time. All they care about is selling newspapers. They don't care if they get sued as they have already made more money that it would cost.
Of course the police are going to investigate the parents. They would be foolish not to, even ones as seemingly incompetent as the Portuguese police who "investigated" the McCanns, but since there was no evidence of them being involved and since everything else that has happened since makes it virtually inconceivable that they had anything to do with it I can't see why you would want to cling to "the parents did it" theory? Apart from anything else they would have to be clinically insane to keep pushing it all these years later if they were involved.
There are many possibilities but parental involvement is only slightly more likely than alien abduction.