Anyone else
Could've done without the ugly, nothing to offer to the plot, son?
shareThe son's involvement in the movie was pretty important for Larry's character development. He needed to learn to let go and let his son live his own life instead of trying to micromanage and holding him back.
The same goes with the museum exhibits. They make the choice to leave the tablet with Ahkmanrah in England, knowing it will essentially end their lives. Teddy even tells Larry that he has to "let them go" even though Larry tearfully explains that he is not ready. The movie was all about setting off on new adventures and letting go, and the subplot with his son made a lot of sense.