Can take a book with you anywhere. My primary concern would be that both the publisher and the library had long term plans for preserving the information. However, if the ejournal forces users to read the journal online, then definitely print. The ideal situation, of course, would be both. Truly a difficult decision.
Electronic subscriptions make research much easier.
Unfortunately, it is impossible to predict how electronic media will change in the future. With the rapid change in technology, it will be difficult to retrieve articles in 10 years. Although print deteriorates, it takes longer. Next time you update your databases you'll be glad to have print. Storage of electronic media is more trouble than it's worth.