What's to hate about drywall? It's easy to work with. It's fairly resilient to abuse. It's easy to paint. It's simple to patch. Having dealt with plaster, wood and concrete walls, I can't think of anything I'd rather.

It’s also fire resistant, because gypsum has a lot of water bound up in it. Drywall will resist burning, and will also slow down a fire as it takes a lot of heat energy to convert the bound up water to steam.