A very great deal of people are quite put off by cockroaches. They tend to evoke repulsion in a way that Spiders and Snakes sometimes do suggesting that humans may have a hardwired response built in. Cockroaches spread germs and we maybe genetically trained to be repulsed. Sadly though our natural fear is naively for all cockroaches when only about 4 species have really evolved to associate with humans. There are over 4600 species of cockroach currently described almost all of which are harmless. Cockroaches occupy many different habitats and they began their evolution away from termites in the Devonian, about 150 million years before Dinosaurs. Maybe we should actually give them a bit more respect then no? Like as in respect your elders. Also think about this: 4 out of 4600 species of cockroach are invasive or troublesome but for the Great Apes it is 1 (guess who!) out of 7, a much greater proportion.
Here are some pics I took recently of a Burrowing Cockroach which I believe is a member of the Blaberidae, or the Giant Cockroaches. When I handled him he was very powerful and could wedge or push under my hands in the same way that a mole cricket and other burrowing things can. Here are some pics: