That you don't have hyphenation is indeed not a minor issue: it makes things much worse as you get a ragged text that makes it impossible to discern where a paragraph ends.

没有断字，可不是小问题：它使事情变得更糟，文本没有对齐，根本分不清一段到哪里结束。

youdao

Research indicates that readers prefer ragged right margins to justified ones and that ragged margins may make the text more readable.

研究表明，读者更喜欢非对称左对齐方式，左对齐可使文本更具可读性。

youdao