Of course it makes sense. It's not correct English but it makes total sense
Weeee-eell, up to a point, Lord Copper.
Thing is, communication is difficult enough. Getting people to understand what you really mean can be difficult at times - just look at the threads here in AIBU!
So, in written English (or in whichever language one is writing), it behoves us to try to remove as many barriers to clear & direct communication as possible.
So it helps in communicated to use clearly demarcated sentences (Capital letter to start, full stop to finish it). Paragraphs to delineate the thinking process - I teach undergrads that:
"A sentence is a unit of meaning; a paragraph is a unit of argument."
Clear spelling and punctuation help others to understand - quickly and clearly - what you really mean. Spelling errors, grammatical errors, twisted sentence structure, malapropisms - all these things make it harder work for others to understand what you want to say, and what you want others to understand, and actually agree with.
But then I still use the subjunctive in everyday colloquial speech, and find it hard to end a clause with a preposition ...