Just don't use WinRAR. I don't like it either, so I use 7-Zip. You do know WinRAR isn't the only program that supports RARs, right?
In my mind, using it is a step forward. The Zip format is old. Really old. RARs are the new way, and everyone's using them now. Why hold back advancement in technology for frivolous reasons? You're just impairing yourself by refusing to adapt to the new compression standard.