i think my first hp/ss was a story by arsenic jade. i only read it because i loved her other writing (especially her origin of myth and her care of magical creatures series) i didn't like it, but could not really put a finger on what i didn't like about it: her writing is brilliant.
then i read the marriage stone which i liked but there was also a point where i couldn't continue. (well, apart from the fact that it is an abandoned wip anyway :D) i think i stopped reading when it turned out that almost every male character in that fic was gay :D
i started a year like no other but that one wasn't for me either. someone had recommended it to me but i wasn't ready for that commitment i guess (it's quite a long fic). another attempt to warm up to that pairing was if you are prepared which i liked at the beginning but had to stop soon, too.
then i found hogsmeade, circa 1826 by taran (also an abandoned wip) and i think that was my trigger. this one intrigued me and from then on i began looking purposely for snarries. so, it took several attempts but i am glad that i kept on reading :D