[yzydserd]

I feel a semicolon is more appropriate; I would not declare misuse.

Prescriptive grammar brings the drama; that’s why I love it. The second clause is more a continuation than an explanation.

This works, though. There is one reason I love prescriptive grammar: it brings the drama.

[kiitos]

It's the "that's" that's the issue.

Prescriptive grammar brings the drama; no matter what I do, I can't stop loving it.

> There is one reason I love prescriptive grammar: it brings the drama.

Masterclass.

[xanderlewis]

I fully agree with this.