That's personal perception.
It's personal experience. It does work for a lot of people. But as with Mirena, about 15% of users experience very negative side effects. And sadly, as with Mirena, a lot of women are told to put up with it for months as 'it will settle', when generally, if it doesn't within 6 months it will not. I had to tell them I did not consent to this form of treatment anymore to get them to take my seriously and remove it or I would be removing it myself (which you cannot do so easily with an implant). Was given the pill to stop the bleeding (it didn't work), told it would settle, was offered anti-depressants for my low mood, which only started once I had the Mirena, FFS. I still have acne scars on my face. No sex for months for months as I felt like shit, had no libido and bled constantly (when we did have sex my h could feel the strings. Had them cut, he could still feel them, was told to have MORE sex to get them to curl into the cervix, WTAF? I cannot imagine them EVER treating a man like that!). They then offered me the implant (the same damn drug as the Mirena) or the Depo (the SAME damn drug as the Mirena) or the POP (the SAME damn drug as all the rest). I had another baby. Then he got a vasectomy. He was 32; I was 38.
I agree, though, the difference was that he wanted to have it and did not want any more children, ever. We did indeed lose a child after that but he remained unchanged and so was I.
So yes, you do have to be in a place where you never want any more children no matter what because it is considered permanent contraceptive. Reversals are not guaranteed. You can also freeze sperm before this (he did not want to).
I was not consulted about my consent and should not have been.