As a user, I really don't care for magic links. The whole, start the log-in process, switch context, wait for email (sometimes up to a minute), click on it, have it open a new tab in a different window than where I started is just a pain. I feel like I spend half my day logging in to services these days.

The only time I like magic links is for services where I am "not really a user". For example, an appointment reminder for my doctor where I need to validate my insurance. Great, send me an email 24-hours before with the reminder and a magic link, as I don't want to think about an account there.

I detest magic links. I have probably 9-10 accounts with a certain service that uses magic links (I mostly use them to get an API key or download a file every few months and never visit directly otherwise) because 1. the only login method they support is magic link and login with Google/Facebook. There's no password field so my password manager can't fill out my login details for me. 2. I don't have a Facebook account, and I don't keep my Google account signed in. Even if I did, I don't want them using these as my primary email address. (I use a catch-all and don't give out the primary address; I give each service it's own address) 3. A bunch of newsletters and forums (hackaday, etc) mention them by name every few weeks, often in the subject field, making it hard to search for. They don't send me any newsletters themselves, and I don't participate in their forums so there's nothing from them directly. They can't do anything about this, but it makes things harder. 4. If you enter a new email address that they've never seen before, the process exactly the same until after you click the magic link you received. They don't tell you they've never seen it before until you verify the address. 5. As such, if I can't recall the exact address I used to sign in, I automatically create a new account and don't find out until after I click the magic link and I'm asked to enter a new username or use the existing username they've already created. Proceed to settings and create a new API key for a new account instead of just adding one to my existing account.

This is an extreme case, yes, but I have similar issues with several services that only support magic links and GitHub login, and it's hard to configure services to use a new catch-all address when they harvest my address from GitHub login and won't let me change it. Magic links are a great tool, but they should _never_ be the only option. They should supplement existing login methods. Password managers exist for a reason. Several services that I have since stopped using for this reason have in the past decided that they should start sending emails to the addresses they harvested from login with other service. Two services have gotten my magic link address stuck in their system because it's not associated with an account (the account has been deleted) and thus I can't manage subscriptions.