Years? You sure you have been checking the View Ads often, aside from trying your luck in the ClixGrid?
Well, I was able to earn my Premium on my 7th month of active clicking with no help from referrals -- and that's during the time when Tasks and Offers were not yet implemented into the system Believe me, that's way back then
You have to be active -- as in: logged in, making sure the "Remember Me" box is checked, then wait for ads as you go on another tab with whatever site you like to visit -- just make sure to check up on ClixSense every so often or lose the opportunity to click on ads that quickly come and go ( with so many members online on a given time, that's exactly what happens to ads that pop up on the View Ads section ) -- then keep trying your luck on the ClixGrid; even standard members are able to strike big -- it all depends on your luck ( kung swerte ka talaga )
And since the Tasks ( provided by CrowdFlower ) and the Offers were introduced, your chances to earn are far significantly greater than my generation You just need a lot more effort into it than from other sites that offer bots and what-nots ( no mentioning names of sites here -- Forum rules )