Why not both? I love physical books and have hundreds backlogged in my library but I also have a Kindle Paperwhite and love it. Most new releases I want to read go on the Kindle and I always have two books going at a time, one physical and one electronic. The Kindle is great for reading at night and for traveling. Best of both worlds!
I also recommend using Goodreads.com to track your reading lists and for setting reading goals each year. I'm about 10 books behind my goal this year due to re-reading Sanderson's Stormlight Archive series in anticipation of his new book next month. They are so long that it takes out around 3-4 books I could have read in the same time for each of his books but they're so good!