Cell phones from other brands have Touch ID and it works great. Apple has Touch ID on their iPads and it also works great. As it does on the MacBooks. As it does on the iPhone SE. It should be brought back.
I am not a fan, simply because of the screen real estate that needs to be sacrificed.
Other phones tend to have it on the back, and I have heard there's good progress in having embedded thumbprint readers in the screen.
I have, however, really come to like Face ID.
[UPDATED TO ADD] I think that it's interesting that folks ding comments they disagree with. I upvoted all the responses to my comment, even though they may disagree with me, because they were made in good faith, and contribute to the discussion.
It's a lost cause by now, but I really liked Sony's implementation with their Xperia Z5 -- the fingerprint sensor was on the power button.