Depends on the type of application, 99.9% of Wikimedia users are using the site without being logged in. If the site doesn't work without being logged in you c

Depends on the type of application, 99.9% of Wikimedia users are using the site without being logged in. If the site doesn't work without being logged in you could frustrate users and they might just use a different product instead of searching for their login after being logged in for a year or longer.