The biggest reason is I move around a lot and the 16" MBP has weighed on me. It's a really chunky and heavy laptop. Sometimes I don't even want to carry it anywhere.

The M5 is also significantly faster than an M1 Pro. I definitely feel the snappiness on day to day use. I'm also upgrading from 16GB/512GB to 24GB/1TB.

The screen is quite a downgrade and the battery life, surprisingly, is only marginally better than my 5 year old M1 Pro with only 79% capacity left.

Other than that, I don't miss anything else about the M1 Pro. I hear rumors that they're making a smaller MBP in the M6 Pro/Max generation which is why I wanted to wait originally.