You might be right. In any case, my speaker stands have 4 spikes. I was just saying that "in theory" 3 is better than 4 for stability. TBH I don't know of any 3 spike speakers/stands.
No, no kids yet but we do have two cats...and the tops of my speakers frequently form part of their race around the living room obstacle course
. A 5Kg cat landing on top of a speaker after a 5ft leap imparts a fair amount of sideways force I can tell you. That's the main reason my speakers are blu-tak'd to the stands otherwise they'd just be knocked clean off each time :inferno: 
Michael.