I have never had an online tree, and as I read some of these posts I see more and more reasons to back up my decision!
I keep mine on paper, so I add what I want, and leave out what I don't want. Paper is the TOOL I use to record my tree.
I appreciate that others like to use a FH programm, or an online service to record their trees. But surely that is just a different TOOL with which to record YOUR research! Not a MASTER telling you what to put, or recording things off its own bat without you knowing, whether they are correct or not, and whether you have actually researched them or not! And then to add to this, there are people who will then copy an online tree, and call that research, and the tree a "source".
Keep online trees to what they should be - someones actual research, of what they want to research, and that they have researched, using online facilities as the tool to record it.