Dssdassw, thanks for the answer. To answer your question of "Why do I not want the 32-bit?", I guess my answer is, why should it be there at all? I've never heard of an installer installing both 32- and 64-bit versions.
Specifically, I say...
1- It's confusing. I've spent time looking in to this matter, needlessly as it turns out. If it's confusing to me, I'm assuming it could be confusing to others as well.
2- It's taking up space on my SSD. Sure, 70MB isn't a lot, but it shouldn't be there at all. I imagine it adds incremental unnecessary bulk to the Registry as well.
3- The shortcut that was put on my desktop was for the 32-bit version, which I didn't pay any attention to at the time. When OBS tells me an update is available, and I accept the update, it was only updating the 32-bit version, I found out (because that was the version I was running). I discovered that because I used a program to tell me what installed programs I have that are not current. It flagged the 64-bit OBS version, which is how I found out I had 2 OBS installations in the first place. More unnecessary confusion. If OBS is going to install 2 versions at once, it ought to update both versions at once when it says an update is available.
Is there an advantage of the 64-bit version over the 32-bit? I have no idea. I assume the 64-bit version is preferable if your PC can handle it. To install both versions, to me, seems ill-considered. Out of curiosity, why do they do that?
PS- I updated the shortcut to point to the 64-bit version, so that's not an issue.