Bad hentai does certainly exist but the medium as a whole is not bad. "Bad" is also a very general term, and I'm not sure whether you mean morally bad or bad quality and since everyone else has taken the morality side of the question, I may as well address the quality side.
There's a lot of quality hentai out there that actually has romantic stories involved and aren't just straight out sex. That's a HELL OF A LOT more than you can say for regular porn, where really bad actors give a half assed performance that you just skip to get to the "good bits." Yes, hentai like this certainly does exist, but I find a whole lot more of it that I've actually enjoyed the story more than the stimulation it provided. Not to mention, you just don't get written porn over this side of the pacific other than trashy romance novels, which are always bad (This is just my opinion from what I've read) and completely targeted at the female audience. Hentai does indeed tailor more for the male crowd, but there still exists a large amount tailored for women as well.
This post is getting a bit long so I'll cut it off with short answer: No, not all hentai is bad, but some is, just avoid the bad stuff and it's really no different to any other form of entertainment.
There's a lot of quality hentai out there that actually has romantic stories involved and aren't just straight out sex. That's a HELL OF A LOT more than you can say for regular porn, where really bad actors give a half assed performance that you just skip to get to the "good bits." Yes, hentai like this certainly does exist, but I find a whole lot more of it that I've actually enjoyed the story more than the stimulation it provided. Not to mention, you just don't get written porn over this side of the pacific other than trashy romance novels, which are always bad (This is just my opinion from what I've read) and completely targeted at the female audience. Hentai does indeed tailor more for the male crowd, but there still exists a large amount tailored for women as well.
This post is getting a bit long so I'll cut it off with short answer: No, not all hentai is bad, but some is, just avoid the bad stuff and it's really no different to any other form of entertainment.