If you have a chance to use realism to make life difficult for the PCs in your game, make sure you capitalise on it.

Make them take the time to clean and oil their swords and armour after each battle, to prevent them rusting. Make them pay outrageous insurance premiums and enormous damage bills for the super-powered fights they have with supervillains which end up destroying half the city. And for Pete's sake make them have to visit planets with unbreathable atmospheres.

Transcript

GM: The gravity of an asteroid has pulled your ship on to it.
Obi-Wan: I try to get the power working again.
Padmé: Hotwire it!
Obi-Wan: Fortunately, I have a point in Hotwiring after our experience at the bottom of the ocean on Naboo.
GM: Another asteroid is on collision course with you.
Padmé: Oooh, you could Summon Bigger—
Obi-Wan: I roll a 16.
Padmé: Awesome!
GM: The ship comes back to life.
Obi-Wan: Can I follow Jango's ion trail to his landing site?
GM: Sure. But it fades out into the smoky atmosphere of the... volcanic landscape.
{Obi-Wan lands on the surface}
Obi-Wan: I get out and look around. {he does so}
R2-D2: Obviously the air is highly caustic and poisonous.
Obi-Wan: Apparently not.