GameFreak getting lazy?

[Desert Cat]

Never once in any game does a Pokemon ever gives birth. Gamefreak tries to dodge that by saying eggs "just showed up" in the Daycare. So, Marowak never has a reason to die outside of obvious implications.

That said, here's another point... How does a Pokemon die when it survives having (horn) drills put into them, several thousand volts of electricity, getting attacked by Lava and Eruptions, Frozen solid by something not cold enough to cryofreeze, caught in an explosion, caught in another explosion, tossed in a fissure, poisoned, severely poisoned, making sweet love to a whale, getting physically attacked by anything the size of a two story house or larger...

I figure it's impossible to kill a Pokemon and that they can only die of old age.