Linux

Honestly: I cannot have the Instagram app on my phone (both for privacy and for addiction) - I have it installed on Waydroid and the fact that it works like 50% of the way keeps me from using it more than a couple times a week.

if you want netflix witjh DRM stuff like offline downloads waydroid can do it I think via the android app..
You need to use a waydroid-utils script to install "widevine" for drm.
This is a solution i've tested for someone else not me;
I think it works, but it's not been rigorouly road tested.

Posssibly other DRM services will work if you can tolerate that type of thing.

My guess is that the main use for it is android app development and testing.

I use it for some banking apps and online shops that require the android app for using coupons.

Definitely not to have android apps on a Linux tablet, because in-waydroid rotation doesn't work, and rotating the tablet itself breaks the windowing system until you reboot the container. Issue first reported in 2021.

Playing Slay the Spire.

It does have a native Linux version but it doesn't sync cross-platform. So since I like playing on the go it is nice to also be able to play at home on a bigger screen.

F1tv, Amazon music and that's about it more or less. I'll occasionally use it on my steam deck for some android games but I don't play more than maybe 3 or 4 android games total and that's rare.

I use it to play visual novel type android games.

The only thing I can truly think of is Signal. If there was a native Gtk app for signal that was near feature complete I would probably ditch Android altogether. Maybe OSMAnd~, but that's a nice to have.

I wonder if Pokemon Go would work on waydroid...

I use it to run the Sky App to stream football.

The only options are a windows app or an android app (since you can't watch in the browser) and I couldn't get the windows app to work with WINE.

The android app runs fairly well with waydroid, although it occasionally runs into some hiccups.

Used to use it for Apple Music but Cider 2 does what I want now, especially since Apple started locking down AM on rooted devices (of which Waydroid basically is) for no good reason.

You already answered this in your question description :) With a touchscreen laptop and Linux and WayDroid you can have a Linux tablet. (Unfortunately (?) the choice of a DeGoogle ROM for Android tablets is minimal and you never know when the ROM developer will buy a new phone, change their life priorities and drop the ROM development) Compared to an Android phone you'd have a much larger screen. What do I use WayDroid for personally ? Just to test some programs, to see what's new in F-Droid, and sometimes use LibreTube.

Was straight up asking myself this the other day and still couldn't come up with a good answer. I keep reading for 2fa or my passwords but that's not really a reason IMO. Why not just have a copy of your totp seeds (any good android totp manager should let you export) and then use a desktop manager like keepassxc, the same with your passwords. The only reason i can personally think of are games but even then which games are worth keeping on your desktop that don't already have a port? Another application that might be worth emulating could be like Shazam but not sure how good the desktop alternatives are

2FA app, in my case aegis, and a few games

To make my system less secure lol

Side point, is it possible to install the google play store on waydroid? Aurora keeps crashing.

Android does have lots of games, and some apps that aren't as easy to use, or as good as in native linux. For example, some painting apps (krita is powerful, but can also overwhelm someone), video editors like capcut or lumafusion, audio apps. For most of everything else, there is a web browser on linux that can do the job better probably, and native apps. But overall, I'd say that Android apps aren't really that useful on linux, because they're mostly geared towards apps that you use on the go, while you usually sitting on a chair at home or work when you're using linux. To be honest, most native apps now have been replaced by a web browser, so either native linux or native android apps are only useful for high end professional usages (e.g. blender, video editing, etc) rather than everyday use.

Using the Apple Music client

Minecraft Bedrock.

Don't search tasks for a tool. Search a tool for your tasks.

Reminds me that my daughter wanted to play Toca Life World on her PC. So I guess I would use it for that. As soon as I have the energy to do it.