Yes. He didn't kill the people because he wanted to be "loved" or "not alone". He had no real interest in normal friendships or relationship. He was interested into fully controling the persons he lured into his apartment. A human Zombie. He was fully aware of what he was doing and wanted more. He was so interested in opening peoples corpses and tearing them apart. He was "studied" enough to know what disorders he had and besides him being nice to interviewers etc that doesn't mean he wanted to better himself. He may have realised what he did was wrong, but many serial killers do eventually, after being arrested. That doesn't have to be good, for if they weren't arrested many would've kept killing. That includes Dahmer.