Meh, I read the Twilight series. I'm not going to sit here and argue as to its literary merits (because it doesn't have many, if any) but you can't read Shakespeare all the time, either.
Shakespeare is like a kale smoothie. You know it's extremely good and beneficial for you, but they don't always taste the best, and you can't drink kale smoothies all the time.
The Twilight series is like a box of Twinkies. They have no nutritional value whatsoever, they're not even that good, and you know you'll regret eating them as soon as you're done...but sometimes you just need some brain candy.
Some people have made it their life's work to study the incredible diversity of subjects and characters in Shakespeare's plays. He is arguably the most important figure in the whole of the Western canon, more than the King James Bible, Dante, Homer, and the three Athenian tragedians. Why? Becuase of the relationships he wrote about, and how well he wrote them. His perception of humanity is amazing, it is beautiful. I may not be a scholar of Shakespeare, however, every day I find myself reading either one of his sonnets, or part of a play, because not only did he cover a wide range of relationships in his work, each was written with that observational genius, one that has not been matched since. No one has matched the Bard, not Tolstoy, not Nabokov, not Mcewan, not Amis, not even Joyce (another writer who I seem to glean fun and wisdom from daily).
As for what Lady Artifice said about Shakespeare being considered 'low quality' in his day, well, all playwrights during the early and mid renaissance were treated poorly by the literary academy, and (more so) in society at large, due to societal stigmas concerning playwrights and poets--for instance, that they were ruffians and sleaze bags. To be 'somebody' during the Renaissance, it was best not to be a playwright or an actor. This changed near the end of the Renaissance with John Milton, and many of the romantic poets who came thereafter (e.g. Shelly and Keats), who were all very much influenced by Shakespeare's work.
One of the things that Milton did that was very taboo at that time was to write his epic, Paradise Lost, in blank verse (though it has the odd irregular rhyme) it was taboo because blank verse was the verse associated with playwrights. Basically, poems had to have rhyming iambic etc., and plays all had to be in blank verse. For Milton, a Cambridge educated man (considered part of the literary academy) and a prominent writer, rebel, and poet in England, to write a poem in such a way was considered like blasphemy and was probably part of the reason why Paradise Lost was so unread when it first came out in 1667--well, it was also first printed in Latin, something which Milton was never found of to begin with (because less educated people would not be able to read it). Eventually Milton got his way, when the poem was not selling and the publishers had to change strategy and finally printed the epic in English.
The literary people at the time could not get over the blank verse in Paradise Lost. Some could not even get past the technical aspect to read the poem, you can find critiques from the time period that say nothing about Paradise Lost except that it is in blank verse XD. People seemingly found the technique even more 'horrifying' than Milton's conception of the creative force of the Judeo-Christian God (whom he simply calls 'the Father' in the poem), a hermaphrodite sitting like a dove on the egg of the abyss, and "madst it pregnant'. People in the 17th century were more horrified by the blank verse than that. They don't even mention 'God the hermaphrodite' lol. It sounds like something that Shakespeare--if he were alive to read Milton---would have included in one of his comedies. XD
*I should add that you don't need twinkies to survive, and in fact, if you eat them daily they well have adverse consequences on your health. Twinkies don't have health benefits
. Also, Shakespeare is not analogues with a health food niche. Shakespeare might not be as well read as he used to be, however Shakespeare legacy, his 'posterity' is that he lives in our culture, in our language, in our understanding of how certain relationships work, he is a part of our conception of humanity to such an extent that we now take him for granted.