I am not - I hate AWS(and cloud in general) with a passion - overpriced, you are getting locked in by a closed ecosystem the moment you say "hey this feature is neat it will save me so much work", only to realize that you are stuck paying for it for years if you decide to move away from it. But people are inclined to jump on a hype train and become evangelists for life. Truth is AWS(or GCP or Azure or anything else) is a viable option in two cases:

1. You are making a product with 3 friends on evenings and you want to ship asap without having the capacity to invest and setup infrastructure. 2. You are a huge corporation with tens of thousands of employees and hardware needs that you simply cannot source yourself easily or sort out the collocation of the hardware.

Everyone else - get a dozen second-hand servers, shove them in a rack in a data center and you will own the hardware and everything associated with it at half the price of what you'd be paying AWS in a year.