If that were truly the reason, I could begin to understand them
However, it's not the case with either lynch or flimsier - they're educators.
Firky is a different story - he doesn't have much of a life, and won't, and keeps stabbing himself in the back/self-sabotaging any time he gets a glimmer of life beyond the immunosuppressants he takes to stop his monkey-liver going ape (bad pun, I know!
).
Why they do this isn't about having no lives, it's about malice, and specifically, it's about exerting power over someone, and not believing they'll ever have to pay for doing so.