I love using paper maps! They provide an overview that's difficult to get/access on the internet. I tour with a smartphone and paper maps. I use Google bicycle directions to look at route options, Google street view to check out shoulder width and other geographic conditions, and then use paper maps to keep track during the day. I don't do a lot of detailed route planning, though. I start a tour with a rough idea of the points I want to hit and then decide my route day by day. But access to the internet on the bike now gives the option of heading out in the morning without a clear idea where the day will end, yet still some informed sense of that the options are. Which is how I like to do it.