A great program that Microsoft is slowly messing up.

I like the products, but I got to say (wrt Office Word in particular) that they make it f*cking impossible to easily change or add languages to your documents. I literally have to get my entire document translated automatically in order to change the language in which it is spell checked. I have to watch them change punctuation and other vital details, messing up the document, in other words. Why is it not as simple as adding multiple languages and then just being able to speak in both without them coming up as errors?? FFS