I left Digg for Reddit because Reddit's community at the time valued articles with content over images. As Reddit has absorbed Digg's old user base, so too did it absorb much of the culture of Digg. Reddit no longer seems to have much focus on reading and has instead become a place to find funny images, much like Digg in its heyday. It feels inevitable that the culture of a website like Reddit will change over its life span but it bothered me to see it happen first-hand.
But with Reddit, there are thousands of others who agree with you, who have created tons of subreddits that would be relevant to whatever your interests. Obviously some communities are more active and more interesting than others, but they're around if you look. Here are some great article-based reddits: