My experience as a back-end developer was that although it makes quit a lot of mistakes but if I put a medium amount of time dwelling on it, it can give me a full webapp. I was always afraid of front-end development but now with the help of this guy I'm making mediumly complex websites in 3-7 days. and thanks to its wide range of knowledge on almost everything, I can run a few full online businesses solo and see which one turns profit. it needs a LOT of improvements and there will be alternatives in the coming months but one thing for sure is that the future is for those who capitalize on it.