The occasional use of the free “delete your account” page is alright in my book.

Considering your average printer is a piece of shit that needs to be replaced quite often, yes, using a website is probably more energy efficient.

Also, expanding on that, if you go into every interaction with a narrow expectation (e.g. to find the love of your life) you will be disappointed almost all the time but if you keep an open mind you might come out of that with some other positive interactions (a new friend, an interesting conversation, …) than you expected or were hoping for.