If you are deciding on whether or not to use Avada for your website, first I want you to know that you can make a website with it, but how much time that will take and the learning curve you will have to go through are the issues here.
Their Fusion Page Builder has content lock-in because it's shortcode based. This means Avada for life, if you want to make a change to a different theme in the future, you have to start from scratch. This is why I don't like to recommend using a page builder that is tied to a theme.
Avada has been referred to as a slow bloated theme. You have to remember with websites, less is more. With Avada you get more, a ton of stuff that you don't want and will never need, this is the bloat that people refer to. It's not good for the user to have all that stuff in a theme that slows down the WordPress backend and locks you in further into the theme.
Cost should also be a consideration. It is currently $60 PER WEBSITE! Most themes allow unlimited installations for around the same cost or less.
Also, you only get 6 months of support and then it's over $80 per year per site if you run into any issues. I'm not complaining about the cost, but I do think it is something to consider.