For distros targetting ordinary users the office suite should come preinstalled as long as you can't buy one at Staples.

That said this is also part of what makes Linux shine compared to especially Windows: Usually everything is installed and Just Works in 20 minutes after started installation. (Have been fixing peoples borked Windowses from '95 to '08 so I'm allowed to be opinionated here. : )

That's mostly not true, nearly every windows install from a store bought machine has trial versions of office already installed. Word and Excel are expected programs for most people.