Luckily, Mycroft was under no illusion that apparent immortality meant the continuation of everything he'd spent his working on would continue, even within his own lifetime. Things could still go wrong. Complete collapses could occur. Romulus himself was testement to that, though it was something Mycroft had been previously aware of too. After all, it just made sense, didn't it? One look at history told him that there'd be no logic to the situation otherwise.
Well, there'd be less logic to it, anyway. Romulus and his kind's mere existance saw to it that the whole thing would never make complete sense, no matter how hard Mycroft tried to understand it all. To human eyes, they were, at their core, impossibly illogical beings.
It was interesting to hear the other man talk of history, even as lacking in detail as his words were. Mycroft imagined he could spend a great deal of time indulging in questions of the specifics were he allowed to, but alas, he couldn't envision that happening. Romulus seemed perfectly keen to talk about the past - he was even smiling as he did so! - but Mycroft was a busy man. If he weren't waiting on a response issuing instructions for what he should do about the other man's presence, an impromptu conversation like the one they were having certainly wouldn't fit into his tightly planned schedule!
Which wasn't to say he had no free time at all, of course. Sometimes, usually an evening, he managed to find a few hours for himself. Perhaps, if he were lucky, he could arrange for a longer conversation then? It wouldn't be inappropriate to do so, Mycroft didn't thing. It wasn't like he would be asking questions about anyone he had personal links to (lest he find himself on the receiving end of some strong ire as a result), and with his observational abilities, he'd undoubtedly find himself picking up some useful information outside of personal indulgences throughout the conversation.
"I pray to whichever gods deemed most appropriate that I never find myself in that situation. While I'm sure I could do some good work with endless time at my hands, I do not believe myself suited for immortality. I fear it would drive me to insanity before long."
Between actual noise and the information he was rapidly processing from all directions, life was already too loud for Mycroft. Presumably, it would only grow worse as time went on. Subjecting himself to that was far from something he longed for.
"As you have no immediate plans to leave the city, perhaps we should meet to talk properly another time. I would love to discuss the intricacies of some of these things you've witnessed with you, but, as I'm sure you can imagine, now is not the time for details. We could meet for dinner, if you would be willing?"