Random people coming up to me, usually stating something perfectly obvious that doesn't need stating ("Cool Hat!/Hey it's Hot Today/How about the footy eh?"), and then trying to converse on a variety of boring subjects (the weather/politics/footy/where I bought my hat/vaccines are evil/Jesus Christ is Our Savior) is a colossal waste of my CPU time.
I agree. Most people who do this are introverted/shy by nature
unhappy with it and this is their method of proving to themselves and the world that they're not. However it ends up being just as awkward and an equal waste of time because it lacks genuine emotion. Don't say anything and be content with it unless it's something you truly want to express. I.e. whatever is natural for you is probably natural for them.
Random people coming up to me, usually stating something perfectly obvious that doesn't need stating ("Cool Hat!/Hey it's Hot Today/How about the footy eh?"), and then trying to converse on a variety of boring subjects (the weather/politics/footy/where I bought my hat/vaccines are evil/Jesus Christ is Our Savior) is a colossal waste of my CPU time.
Don't be that annoying person. Live and let live.