Congrats!
I started using Atom a year ago, but at that time it was very unstable and the performance sucks so I switched back to Vim.
This 1.0 still has something to pine for: some of the essential packages are still not updated for the 1.0 API (vim-mode, etc), and when processing large files it still slows down significantly, but as they say, it's now a good foundation to build upon.