![](https://lemmy.ml/pictrs/image/d3d059e3-fa3d-45af-ac93-ac894beba378.png)
That's correct: I use FOSS where possible, and if I must use closed source it must store data in an open standard.
As you insist on evidence: I can create and open 100% of my archives in all systems I use now or in the foreseeable future without installing additional software. RAR fails that test.
The other reason: RAR is a closed format, and like I said there are better alternatives that are not proprietary.
Likewise your philosophy is that RAR is best and you are free to have that opinion also without providing evidence.
From memory it has a different layout in /etc, /use, and /opt that kept tripping me up. Simple things seemed harder. I do a fair amount in older versions of Java that caused problems. It's been a while though, so things have likely changed.