[qubes-users] Is swap necessary?

The Qubes installer says swap is important. I did a Google search and it turned out that Qubes hardly even uses swap. Specifically, I found this: https://www.reddit.com/r/Qubes/comments/86evqe/swap_is_useless_on_qubes/dz32iof/?context=8&depth=9

Is it at all important to install Qubes with a swap partition? Currently I have it running without swap.