system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: If telomeres shorten with every cell division how is it that we are able to keep having successful offspring after many generations?

EDIT: obligatory #made-it-to-the-front-page-while-at-work self congratulatory update. Thank you everyone for lifting me up to my few hours of internet fame  ~(‾▿‾)~  /s

Also, great discussion going on. You are all awesome.

Edit 2: Explicitly stating the sarcasm, since my inbox found it necessary.
gpt
We have a little protein in our bodies called telomerase, which regenerates the telomeres, but only for our sex cells. So we can have a healthy offspring, with fresh telomeres.

We are currently trying to see if we can apply this to prevent aging.