I really rarely ever need 32bit libs for anything, most notably and weird: Steam.
I heard even they are working on a 64bit client, fscking finally, and I really have ideal why this is even a thing in 2019. Installing steam and arch both require you to use the "runtime" version, that runs at 32bit, and for fsck's sake I cannot think of a good reason why this is. Everyone complains about it, and in 2019 it *is* still a thing.
There are how-to's how to get Steam to run in "native" mode, but I've never gotten it to work. Ever. The 32bit version works fine, but gezus, why still I ask as it pulls in a ton of irrelevant 32bit libs with every install otherwise and Steam, despite their progressive linux support, still does not?!
-mb