Word is easy, moderate, and hard. Depends on how you use it.
BUT, it can do just about everything!
I've done 900 page docs with other documents embedded. No issue in Word.
I've done programmed entry of Oracle data into Word. Perfect.
I've done automated printing of hundreds of documents from data fields in Word.
I've done math formulas and a math book in Word.
Are there easier programs, sure.
Is there Google Docs, yes (and I use it too)
But Word is great!
For word processing, Word is complete. And it works seelessly with Access, SQL Databases, Excel, etc.