> Are there any examples of Haskell being used to do anything really cool and useful to the average programmer.

https://code.facebook.com/posts/302060973291128/open-sourcin...

More here: https://www.fpcomplete.com/business/haskell-industry/ https://medium.com/@folsen/haskell-in-production-bdellium-1d...

> I would simply not bother using because no one uses it and deploying it would be a headache.

It's just a binary you can run on a server? There is also Halcyon:

https://halcyon.sh/tutorial/