I find it useful of how easy the coding is. If you want to code a simple part to your game, you don't have to go through 20 files and add masses of code. You can start from absolute scratch if you want. Another good thing is that its small, in a good way. You want an answer to a question, you can get a rensponse from the CEO. Direct problem solving. And the asset store is very helpful. Most things people make on here are small, but may contain something you might want in your project. If you ask nicely and don't annoy people, your gonna get help.
It all just depends on what you want to do. But I personally think LE is just as good, (maybe better) than all the other big game engines.