You make your arguments clearly, mostly. What do you mean, though, when you say online students can finish their work in "no time"? Do you mean on their own schedule, or easily, as in it takes "no time" to do the assignments?
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As you make revisions to your first draft, look for things like that where your reader might not understand what you mean. It makes sense to you, but might not to someone else.
Also check for grammar, as in use of commas, etc. I see several errors. For example, in the next to last paragraph, your topic sentence about a tough choice is a complex sentence. There should be a semi-colon before "both", not a comma. Better yet, make the two complete sentences stand alone as two sentences. Be self-critical. If I was your teacher, I'd take some "points" off for such things.