One difference is that server interactions on a MPA are usually more predictable. I can wait for a good internet connection to submit a form or click a link. On

One difference is that server interactions on a MPA are usually more predictable. I can wait for a good internet connection to submit a form or click a link. On top of that, I'm using browser navigation to navigate a lot of the time, and while it's not impossible to provide good feedback about interactions in a SPA, many sites don't (or worse, use optimistic UI updates without handling failure states well so it's impossible to tell what's persisted and what's not).