Like many other things, user-friendliness is in the eyes of the beholder. If an application does things in a way that matches how a user likes to do things, then it is friendly. But not all users set about doing things exactly the same way . . . it depends on how your brain is wired.
I was a Logic user for many years, and was dragged screaming and kicking into Reaper because I needed to use it to be able to work on a collaborative recording project.
It took me a while to get used to how Reaper works, but when I did I was hooked and now don't use anything else.
You said you could find "editing options that Cubase LE5 doesn't have already". I thought this as well, when I first started using Reaper. It didn't take me long to realise that it's editing capability was extremely powerful . . . it just wasn't presented as a separate window.