Many of them are, without giving further thought to the situation. It's a natural and expected urge.

[Yoshitsugu isn't one of them. He did die, after all, and even if he could be returned intact to his world he would only end up dying again. His only intention in this world is to go with the flow and just see what happens... well, while doing his best to prepare Takatora for potential seperation.]

But yes, you're right. I personally find the potential reward of cake to be excellent motivation on its own.