The community is simply one of the friendliest and welcoming bunch of people you will ever meet!
Setting up Umbraco is easy and simple.
I use Umbraco CMS daily as a web developer and also as a blog owner. There are many features out of the box. Third party package integrations are easy to install. Integrations range from small property editors through to complex workflows and data integrations with third party services.
Support through their official forums comes from both official employees of the company and community members.
I like being able to easily customize doctypes in Umbraco. Also, localization is easy to implement, which is a huge plus for me. The initial setup was easy, making it more convenient to get started.