Just remember the NES days. Little to no save feature whatsoever. Meaning, once that game goes in, that was your only chance to beat it (after blowing into the cart and hitting the system with your knee to solve the blinking problems).
I recently beat Final Fantasy 12 and the thing I hated the most about it is when you were exploring a place that might be hard to get out of. When you save it, it would say "It might not be easy to get out of this place, it is recommended that you save this game on a different file" or something along those lines. Give us the opportunity to explore instead of giving us that stupid comment! If we mess up, then it's our own faults. Don't tell us how to play the game in the game!