I won't scoop my own poo out of the toilet
Do you just leave it in there?
Yes I do, I worry that someone will smell it and find out.
I don't know what kind of toilet that you are talking about, but you don't need to scoop it out.  Pushing down on the metal lever on the back will automatically flush it all away for you.
I just don't care.  It's a problem for someone in the future to take care of
I think you actually do care, which is why it is important for you to learn about how bathroom appliances work.