All true.
Hard to make income from cattle unless you have a bunch of land.
And yes... black hide sells best

but my grandfather refused to go away from polled Herefords.
Herefords are well known for calving ease, great mothering, and easy to manage. BUT that also depends on how you manage your cattle, and genetics.
My grandfather selected carefully for his herd, making sure that they were easy to handle and manage (as well as the regular things). The last cow that we had that had eye issues was sold when I was kid. He had selected carefully against eye issues until it was no longer a problem.
He had the polled herefords so he didn't have to worry about horns.
He always bought a super young bull, from a breeder that (as well as all of the usual things) selected for gentle well mannered bulls that were trained to not push up against you.
Then my grandfather would keep the bull for about 3 years, at which point the bull would start to "feel his oats" so he would be sold and replaced with a new young one. That strategy was so our fences could stay in horrid shape. No joke. Also, selling a young proven bull meant he almost made money on the bull, since he bought them young and untried.
He also sold any cow that felt like running through fences was a good idea.
And my grandfather had them all trained to come when called, so it was easy to move them.
BUT, then there is my cousin, she also has cattle, scrub cattle and some herefords. She doesn't manage them like my grandfather did his. She is pretty hands off. As a result, when trying to load a few up her brother was royally trampled. Super bad.
Bad accidents can happen with any large animal....