I really like it. It's definitely more intuitive for me than F360.
I initially went with Atom when I switched from Inventor.
I found it to have similar workflows, but early on, I got pretty frustrated with it's lack of all the -easy buttons-, for lack of a better term, that Inventor had.
Atom pretty much forces you to think outside the box. It MAKES you learn the basic stuff, like constraints and good sketch practices. It also makes you think about and learn how to transition 2d sketches into 3d shapes, because it doesn't have the little cheat buttons like "move face", "remove face" etc.
After about a year of learning Atom, I realized how much I actually didn't know, back when I was using inventor.
When I upgraded from Atom to Design Expert, (which is very similar to Inventor and SOLIDWORKS), I realized that Atom had made me a much better CAD operator.
Atom was probably the best CAD training tool I've ever used. That includes the two semesters of drafting and 3D modeling in college.
And, Alibre's practice of applying the price you paid for Atom towards an upgrade to Design Pro or Design Expert, gives a pretty strong upgrade incentive to their users.