There is, for the same reasons that people use screen or tmux (which some people do use for this). If I were queueing a prompt I expected to take hours to finish, it would be nice to be able to run it another computer so I don't have to worry about closing my laptop lid or the battery dying.
It's not world-changing, but I have had agents do `grep -r /` commands before and it would have been nice to be able to detach and let it run rather than having to kill it because I have to leave before it'll actually finish (WSL is sooo slow on that). It would be better if the agent did a better grep, but sometimes I'd rather wait 20 minutes than spend 7 minutes setting it all back up again.