Should my desktop app support 32 bit?

There are some odd targets,

• macOS / darwin 32-bit
• Older macOS versions
• Windows XP, Windows Vista

But for Linux 32-bit and Windows 32-bit, I think many people still use these.

For some reasons, in awesome-go, some desktop framework, e.g. Muon / Ultralight support only 64-bit variants on all platforms.

I want to use an embedded REST API database? EliasDB also support only 64-bit...

So, why?