I guess it boils down to personal preferences. I have come to detest passwords in general. Especially a new one for each website. (Because you don't know how the site is storing the passwords). I have created a Password Manager (HexaVault.com). If I am using a new service and it asks me to create an account, I go, "Oh man not one more password". Sure I can save it in my password manager which has around 500 passwords now I guess.

So if I see an option to login via some other service - Google/Facebook/Twitter/LinkedIn/Microsoft I prefer that.

What I have come to like is the password-less email only login on a few sites. They either mail you a link or a code to login. Which I think is the way forward. Nothing to remember as a user.