He claimed he felt motivated to head to the forest every night with a bucket of water. I'm not saying this to make fun of you, I remember being young and getting srs authority-indoctrinated-guilt-trips laid on me about whatever cause was in vogue at the time, and worrying very much if I was doing my part.
Mark Twain said a classic is something everybody wants to have read, but nobody wants to read. I think Viridian is the best judge of Viridian's taste. Follow your bliss. At the same time, if you want to try something I do: challenge yourself to keep engaging in some of the higher cultural stuff. Not exclusively, and not in the realms that you really dislike, but just as an occassional mind expanding exercise or as an antidote if you've spent an entire weekend on a bad reality-tv binge. The more exposure to different forms of art and ideas you allow yourself, the more chances are that you will find something that speaks to you, and sparks your interest to delve deeper. Consider for yourself what you find beautiful and uplifting and timeless. Don't take what intellectuals say as gospel. With belief in the value of what you find good, an open mind, and awareness I don't think there is much chance of you turning into a "slothful sheep". And please don't stress that the decline of civilization rests in your hands.