I don't care if you're going 
, it does not mean shit if you rushed AP builds & fed off 5 kills and lose a turret, and sightstone at this point will seems worthless & won't benefit much with the fed enemy ADC & jungler dominating the map wherever they go, all thanks to your selfish lack of map vision purchase.
by the looks of it you never buy wards yourself. take your own advice and invest in some vision.
It's not the support job to ward, yes they are expected to buy it but if they can get a couple wardsearly with out sight stone and everyone upgrading their trinks then vison shouldn't be a problem. I hate when someone complain about vision but at the end of game they placed less then five. I can easily place more wards then a sup once I get that trink upgrade.
It is everyone's job to ward, and I'd prefer a support pick one up late than never. Vision of objectives and opposing jungle is relevant until the game is over.
It's still amazing how inexpensive the ward trinket upgrade is yet people still don't get it ASAP in many cases (support with sightstone should probably dump it in favor of de-warding though). Still, 6-8 of these means vision of objectives/mid bushes and some of the opposing jungle, with extra ward purchase here or there. Yet when I'm support sometimes my wards are 3 of 4 placed or when I'm top I have 2/3 of the wards our team has placed even though I only have the tier 2 trinket <_<. Those games are thankfully not too common but really vision is important enough that every role has responsibility for it.
Granted, feeding is never great, but Annie picking up some early damage items is defensible even if going 0-5 and turret diving isn't lol.
Even if you have 60 gold after buying a BF Sword, you can wait for a few secs and buy that ward. Is it that hard to help out your support?
Sometimes when I play brand, morgana, and annie I choose to buy ap on my first back if we are ahead because I can snowball our advantage. However I would leave the fountain also with a pink or 2 green wards also. I think this can be smart to do a lot because sometimes you just don't need the health right away, and you can do more dmg and keep vision. After I get some ap my next back is always a sighstone.
It's a smilier concept to rushing boots. If i want to roam after I back because my adc is terribad and I tell him to take krugs or gromp real fast while I buy mobility boots and get a gank off mid. This is all how I carry as support. The first buy is situational and not always a sightstone. However if I don't buy sighstone first I need to buy some green wards and a pink.
I always buy sightstone my first recall to base.
Support Annie. http://i.imgur.com/HGy5grz.jpg
Sometimes it's okay to sell the sightstone for more power >:D (Though it should still be rushed for early game map control)
The situation above was because 4/5 team mates were all auto attack heavy ad champs vs a rammus.
