Damon just smirks at the question, leaning forward against the bar as he looks across it at Nikola, and the smirk widens, because okay, this guy's amusing. He'll give him that. "I had no expectations. All I know about what you are is you can't get drunk or get damaged in anyway. But inventor guy whose experiment goes wrong somehow isn't cliché?" There's only the slightest of pauses when Nikola says he doesn't regret it. Damon doesn't anymore despite how he misses his humanity in that way that deeply destructive way, because he'll never be human again.

And reaching anywhere near those levels of humanity is even more painful, because it's never going to be human enough. Damon's smirk widens even if he's imagining Stefan during his Ripper phases with teleporting abilities (if Damon had them even, he is not good and never will be after all).

"Yeah. Makes an uncontrollable killer that much more difficult to control." Or track down or stop.