I kid about it usually(hating pikes) but IMO it's because of what PP said. They hide alot and worse to me they beat the crap out of everything within a 2 mile radius and for those of us that buy them to keep in a large community it doesn't work in our favor.
I don't really hate any fish.. Just pikes seem to stress people out with their relentless attitude..

In tank with the fish solo that can be a great quality but for communitys not so much.
But all in all I think some of them are very cool and the red atapabo(sp?) are
I think Rally's kids about it to, as well as some others..