[ArnoVW]

Indeed. As they say, eternity is very long, especially towards the end. For proof, check out this video that explains how eventually even protons will give out and evaporate.

The thing that blew my mind: when things started getting very weird, and I was thinking "ok but we're roughly at the end now", I checked the indicator. It was only half-way. It is a 30 minute video. And the time speeds up logarithmically.

https://www.youtube.com/watch?v=uD4izuDMUQA

[marcosdumay]

AFAIK, the most accepted theory is that the Universe will allow for useful computation forever. Always get slower, but adding up to an unbounded amount of it.