There's still quite a few software I need that works perfectly on Windows. I tried the alternatives in GNU/Linux and they can't compare, nor can they replicate perfect compatility when files are sent to others then reopened on native software. It mostly has to do with office productivity suites, PDF manipulation, e-book management from my university, and Android as 2nd Display for Extended Desktop.
Some of these have web-based services, but I hate using web-based SaaS. I often need offline mode on doing certain things and can't depend on having internet 24/7 without potential disruptions.
ClamAV isn't perfect. It still has around 75% efficacy. But, it doesn't remove or disinfect standard, you need to tweak it to make it disinfect, especially for real-time on access scanning. I was just reading about it and will do it in a bit.
All other anti-virus makers have ended consumer GNU/Linux desktop support or in end-of-life stage for their products.
I don't play computer games often, that's why I haven't bought or built a capable machine in at least 10 years. Back can't handle sitting on chair for endless hours like when I was a teenager. But, even with Steam Proton Wine in the works, it's still not 100% easy to use or fool-proof. It's getting there and better over time, but for now, gaming is still primarily on Windows as it has greater market share of desktop/laptop computer.