Plus digital is better. Can read in low light, no binding swallowing up the edges of pages (hardback trades especially), poppier colours, portability, zooming and screenshotting, can buy them in the nude, no ads, no clutter in the house (newbies wait till you have thousands of the slippery fuckers, the novelty of bagging and boarding wears off quickly!). Can pick up books I missed, no worries about them selling out.
Even though digital isn't any cheaper, I feel like I'm getting a better deal due to the above.
Yeah space is the biggest plus for me, we don't have our own space yet and storing floppies is a pain in the arse. Plus i prefer reading on my nexus 7, everything just pops on the smaller screen. Oh and Marvel Mondays and other sales are a godsend! Buying a tablet was such a good investment.