That's a kind and thoughtful post, Sherlock.
Yes, being critical of the McCanns - as I sometimes am - is nothing to do with not feeling sympathy.
It is important to be sympathetic, and also to try to say or do things that are of practical relevance and help to a person - the latter being an extension of the former.
Criticising the way the McCanns are handling this trial, for example, as many of us here are doing, is a reflection of the belief that some of the things the McCanns are doing are not working very well for them, and that they would be better off tackling things differently (such as preparing better witnesses), and is not necessarily an 'attack' on the McCanns as individuals.
Ultimately, as I said before on another thread, I think we all feel sympathy for the McCanns at a deep level, whether we like them as individuals or not, or always agree with their approach, because we would never ever like to be in their shoes with regard to our own children.
And of course, we also feel sorry for Madeleine.