Does Easy mode exist? Or is that just something in theory. I've gotten a few floors in so I'm aware of the vendors and statues, just not sure how the cum system works. I also didn't know about skills or saving the game in the middle of a run, thanks for the tip.
No, there is no easy mode for the game. As EmdotRand said, it is just a theory, there were a few people talking about how they would like an easy mode and other that were hating on the idea.
I felt my 2 cents were just as valuable as anyone else's opinion on the matter and instead of making a separate comment, I just added the dotted line to separate it from the rest of my response to you.
There is no benefit to having a nearly full cum bar other than to show a cum inflated belly on your character, so unless you really need that big belly, don't worry about storing any amount of cum.
A couple more tips, if you haven't figured them out: