Please, PLEASE just WARD!
It's gotten to the point now where I'm strongly thinking about just getting an eye while playing mid/top and stalkers jungle. I don't understand wtf is so wrong or hard about doing this as a support?! The stats aren't that bad and it's sure as hell a lot better than a time not long ago when the eye line didn't exist and you had just a sightstone with HP stats.
500 health with 100% regen and gold gen? Or health, AP, CDR, mana regen and gold gen? On the cheap too I might add. You'd be surprised how much gold these generate too, whenever I supp I never find myself short on gold and have my supp items that are priced correctly for the role on par with the rest of the team.
So please, just ward. I promise you that you're doing a lot more for your team by warding than doing just a tad more damage.