I bought the Series 5 because I was stupid. I bought the Series 3 initially just to have an Apple watch. The Series 3 demo was in front of a large graphic of that cool 'infographic' watch face, and it was lower priced than the Series 4 at the time, so I thought it was a good choice. It wasn't until after I realized the Series 3 doesn't have the Infographic face I felt like an idiot. I kept asking how to download/find it and was told it was a Series 4 exclusive.
I wanted to wait until later in 2020 to get a discounted price on the Series 4 but then Apple went and told Best Buy and every single retailer in town who carries the Apple Watch to remove existing stock and only carry the 3 and 5. So that plan was shot. I ended up getting the 5 because that was the only one available at the time that had that watch face. I certainly cared nothing of the stupid AOD. No more than I cared about it being a standard Samsung Galaxy Watch feature for years prior.
I'm wearing my 3 now though because my Series 5 is a broken pile of garbage. It fails to detect workouts now, Music is keen on 'deleting' certain tracks out of personalized playlists, it has a massive wifi/bluetooth handoff bug, it detects 'falls' when my arm hasn't moved, and stand ring is hard to close since I have to shake my hand like an idiot and do a little dance to make it count each hour. It also has poor speed, it stutters and is so much slower than my Series 3 for some reason. It also has a horrible microphone. Can't tell Siri to do anything if a radio, fan or TV is on in the same room.