Being as this is a Linux community, there's definitely going to be more insight into the pros of Linux from responses here. My professional background is as a systems engineer in Windows from xp, vista, 7, 8, 10, 11 and windows servers 2003-present as well as centOS, RHEL, Ubuntu, Debian, and Kali Linux. I've also supported Mac OS X and OS X (currently macOS) server in a more limited capacity and have used laptops of all 3 operating systems.

Windows benefits: I'd say Windows still holds the crown for corporate use. I know this probably isn't what most care about but integration with intune (microsoft mobile device management) and security features such as bitlocker, tpm integrations, FIDO2 passkey support, and directory managed (Entra ID) policies and controls are much stronger under Windows. Windows generally does a good job with backwards compatibility and gaming.

Linux benefits: free as in beer (usually) and FOSS is pretty huge. For the average user its entirely serviceable for web browsing etc. With recent advancements in Proton id say 95+% of gaming requirements are met. More control and much less bloat. You're much more in control of your system but it requires a level of technical proficiency to leverage that control. It's not spying on you. Personally I like Linux permissions system over Windows too for file administration, etc. They tend to have their package management systems be more established too.

Mac benefits: some people enjoy a walled garden. Turn your brain off and go all in on apple products and services. Terrifying to many here but that's a benefit to some. Because everything is so tightly integrated I notice things tend to break less frequently. Great for the technically illiterate and performance is still really good for those who do need video editing, etc. It's surprisingly good for power users too with the BSD underpinning. Better privacy than windows imo.

What I miss? When using Linux and mac i miss the windows familiarity since it was my first OS. But IMO vanilla Debian is a very enjoyable daily driver. I just occasionally break something that takes me an hour to fix. When using windows I get frustrated by how it hamstrings everything and tries to half ass some features (looking at you settings app). Search breaks all the time. More hanging. Performance dips that make no sense. Windows is easily the least stable in my experience. When using macs I feel the end user experience is quite fun. Snappy. More intuitive. But sometimes I want to do something advanced and itll get in its way reminding me that im a power user and it was seemingly not built with that in mind. A bit too glossy, if that makes sense.

Sorry for the messy formatting. Sending from my phone.