The answer to this question lies in who the “I” is. Your personality and desire to play guitar will determine if you need a Teacher or not.
If you want a Guitar Teacher, that’s great. Do whatever is best for you.
But if you are full of drive to play and you really want to learn the guitar, you don’t need a Teacher. (Sorry, fellow Guitar Teachers. Many people don’t actually need us).
The internet is packed full of information — so much that you can learn almost anything. So if you have a passion for playing the guitar, you can hop on YouTube or Google and look up how to play your favorite songs.
This is how I taught myself guitar.