I cannot use charts, because of my vision. When I was younger, I did a lot of cross stitch using charts, but can't do them anymore because I can't see them well. That's why I switched to knitting. I had never knit a stitch until I couldn't read my cross stitch charts anymore.
I was so glad to find a craft that didn't require charts.
Now, I get SO frustrated whenever a knitting pattern only has charted directions. I just pass it by, and move on to written patterns.
Occasionally, I have had to do a bit of knitted chartwork, but it was so taxing on my eyes. I had to use a magnifying glass, reading glasses and very bright light. Not a fun thing to do at all.