Hitting the End is the "end-game" for vanilla traditionally, however in modded minecraft, you have options to reduce the difficulty of this, and also the fact is "End-game" is a perception.
What you can do, is ninja some end-stone away from the ender dragon with some linking books from mystcraft. Basically you portal in, find which way the dragon is, go the opposite, mine some and teleport out again.
Else without mystcraft you can do this with an ender-pouch. Get some end-stone, stick it in an ender-pouch, put everything else in there too, including the actual pouch. You now have an empty inventory and will lose nothing dying to the void to get back to the overworld.