I don't see whats scary about roaches. Other than the potential as disease vector, but if that were the only reason then one would live their entire lives shitting bricks, as theres potential disease everywhere.
Although some of their traits are not exactly endearing....know of anything else that starves to death before actually snuffing it after losing its head?
And ew....seen a pic and report from a bug keeper's forum of one that had half its abdomen bitten off by something and kept on going for a while.
And butterflies, if thats the case, maybe you just need to fuck a cockroach?