I guess I've been thinking about this more lately and presently I am under the idea that leaving a game cartridge in a console cartridge slot for an extended period of time is bad for the slot as it bends the pins out faster than normally.
I'd like to have some evidence to support or deny my claim and essentially have others share their stories on cartridge slots alike.
I would like to leave a game in a my SNES or Genesis, thinking it's a better stop-measure to prevent dust than the covers themselves but somehow long-term deterioration I feel is sped up due to the extended cartridge insertion. Saturn too is a tricky situation, what with the stories I've heard and encountered with the expansion slot.
Feel free to add.