A little history - I was an iphone user since the original iphone till iphone 5. Bought everyone of them on launch day. Then for a change I tried the blackberry z30 and loved the BB10 OS. So ended using it till bb10 died as an operating system. After that used Lumia 950 for about a year. Great camera and decent user interface. But it had its issues and Microsoft stopped making anymore windows phones.
Then I tried a whole lot of android phones - ever flagship there is. More than the hardware, I just didn’t stick to one coz of android clumsiness.
Constantly fiddling with the phone just because I can.
Then when iPhone X got released, came back. As we know it just works.
But being a phone addict doesn’t help. The pixel camera is so good (I found this out when we had a party a few months ago. My buddy’s night photos were so much better than my 11 pro).
So It’s not surprise I got the itchy feeling again. So specific reason. Just craziness
For context, my daily driver is an 11 Pro Max--been using iPhones since their inception but have bounced over to Android periodically dating back to the Galaxy Nexus. I have had a second line for a few years that's incredibly inexpensive due to a work related discount, so I now alway have a secondary Android device, usually a Pixel (previously, mostly Nexus devices). In fact, I just took delivery yesterday of a new Pixel 4 XL to replace a broken and 'not worth the cost to repair' Pixel 3 XL. Without elaborating further as I've done it numerous times on other threads over the years, I know I prefer iOS for my daily driver and won't be leaving the iPhone, but like many here, have gadget lust/envy and genuinely do like how Android does a few things better, so I love having one around to play with. Some recommendations:
1) I too love FaceID and it's one of the reasons why I chose the Pixel 4 XL over the new OnePlus 8 Pro. I haven't been able to test my regular apps but can confirm it does work great with my password manager of choice (1Password) so worst case I have to just autofill the password on apps that have yet to implement Face Authentication on Android.
2) Outlook is good but my preferred email app across all platforms is Spark--use it on iOS, MacOS and now Android. It was only added to Android within the past year so needless to say I was super happy to see it now available. Lots of customization of features I love. It replace the iOS mail app for me years ago. Outlook was my previous choice.
3) Can only comment on what I've seen online in regards to battery performance. I have yet to see anyone say the regular 4's battery life is even average. The 4 XL doesn't get rave reviews either but appears to be better. Neither will get anywhere close to the latest iPhones so just be prepared for that.
4) I'll second the recommendation for Pocket Cast...easily best I've found...on Android. I'd still be using it on iOS if it wasn't missing one key feature that I must have now--offline listening on the Apple Watch. Consequently, I switched to Overcast on iOS a couple years ago because it added this functionality. I exercise, cycle or hike without by iPhone almost daily and not having offline podcasts was a dealbreaker. That being said, Overcast is iOS only, so on Android I use Pocket Casts. I actually prefer its UI vs. Overcast but again, missing that one key feature.
With regards to messaging, unless you're going to be able to have your regular contacts switch to something like WhatsApp or Signal, you'll just have to live with SMS/MMS, at least until RCS is more widely implemented (don't hold your breath on this one). Not sure if it matters for you but Android Auto and CarPlay are comparable...each has advantages over the other, IMO. Camera...yes the Pixel excels at stills and I'd rate it slightly ahead of the iPhone but as another mentioned, you'll be giving up wide angle shots and video capture is far, far better on the iPhone.
My advice...if you're OK with eating the $35 restocking fee Google charges for returns should it come to that, give the Pixel 4 of your size preference a go for a two week test drive. No matter what 'advice' you get here online, it's really the only way to see if it fits with your personal preferences and daily workflow.
Best of luck.