You mention portability. Think about how often that's what you use (or have to use if TV is out of use) that should be a deciding factor.

I recently sold my PS5, not long after getting my steam deck but that is more down to the fact that portable is where I play most of the time. I played lots of remote play when I had the PS5.

The TV experience of the PS5 is much better than a docked deck. But the steam deck is capable of many things and the price value is insane. It's a PC!

Then there's also game prices. Much cheaper on PC. But can you wait a while for those new releases? I know I've answered your questions with more questions but they should be the deciding forces. It's your call 🙂