Please explain Engies on Zombie server?

Jul 10, 2019
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hi! I registered an account just to complain about this sooooo feel free to write me off as salty :p
your zombie tf2 server is awesome fun, really enjoy playing it! untiiiiiill every single round devolves into about a quarter of the humans hiding behind however many sentry guns there are. and the rest of the round is the zombies throwing themselves into the meat grinder hoping to get one or two lucky hits before the round ends.
I can't for the life of me understand why sentry's are allowed in the mode, as they utterly remove fun for the zombie players and turn the human players into "I no longer need to play the game."
Thanks for your time either way :)