I agree. I went to a circus once, as a child, in 1999. I found it to be a mostly disturbing and garish experience featuring tired and exploited performers, humans as well as animals.
I think (hope) the leading edge of human ethics is moving toward no longer treating animals as resources to be exploited, at least not merely for entertainment. Most people still look the other way when it comes to animal agriculture, or are even enthusiastic about it, but I think even that's likely to shift with time, as well.