Vulch is right, of course, Shakespearean drama was very popular in its day, more importantly it wasn't considered highbrow. The so-called "groundlings" could pay a groat (or whatever) and sit on the earth right in front of the stage. The same system offered a place ON the stage itself to the nobs who could pay a king's ransom for the privilege.
We do things differently now, and just as we can't understand why a theatre company would allow some attention-seeking grandee to occupy an area of their performance space for money, neither can we understand the language used in Shakespeare.
It works well as poetry, and it's beautiful to study, but as live dialogue you want to jump up in your seat and shout "multitudinous seas incarnadine?' forget the theatre programme - supply dictionaries!"