How important is this to you?
Do you really mean "to no end"?
This implies there is no purpose to your irritation.
Did you instead mean to say "no end".
This would indicate your irritation is limitless.
Which is it?
If you want the "and", you should omit the comma.
"Why can't people learn to make fully punctuated and grammatically correct sentences?"
or, possibly,
"Why can't people learn to make fully punctuated, grammatically correct, sentences?"
As the "place" in the sub-clause does not match the original "places", should we take this as an imperative?
A sentence without a verb is a sorry thing.
I assume you mean "are" not rampant.
You might possibly value my opinions.
I doubt you would like them.
I do not think you sound at all snooty.