So I was reading an article about the future of Bitcoin, trying to understand what will happen when the last bitcoin has been mined (from a technical perspective).
https://coinlu.com/what-is-the-future-of-bitcoin/So if we do the math, the last Bitcoin should be mined sometime
in the year 2140 - all of us will be dead by then.
However, what do you think will happen and what can we compare the event too?

You are thinking too much. Just think about Bitcoin in near future because you will not live until 2140