Why keep 32-bit version on a 64-bit system?

My dilemma is similar to that described in this post. For historical reasons I have both the 32 bit and the 64 bit versions of PSPad installed , but am unsure whether I still need the 32-bit version. Is there any reason to keep it? Are there useful extensions that only work with the 32-bit version?

Some application doesn't bring any advantage if they are 64b. They are not faster or something like it.

And e.g. Windows Scripting Host (WSH scripting support used in PSPad) isn't supported from MS side in the 64b. It's not my idea. I hope I will break this limit in 64b applications too, but it needs time.

So from my point of view 64b applications like PSPad are "fashion".
When I look in analytics on exceptions, 32b version is more stable even it's compiled from same sources.