Correct spelling enhances your ability to communicate as well as your credibility.
Probably the most obvious reason why it is important to spell words correctly is because by misspelling you can communicate what you didn't intend or possibly even offend somebody. Consider the following example in Spanish:
Yo tengo veinte años. (I am twenty ...
Apart from the previously raised points, there are languages, where not only correct spelling, but also correct stroke order is necessary. Take for example Japanese katakana. There are two pairs of charachers, so and n (ソ and ン), and shi and tsu (シ and ツ), that are commonly written instead of each other by a beginner. This can lead to a lot of confusion and ...
I would say it depends somewhat on the language, but absolutely as the general rule.
Digital may be prevalent, but it is not exclusive.
Rote learning of written characters can really help, in my experience with learning various fonts
You never know when that extra exposure will come in handy
Finally, there are numerous studies of the benefits ...