I love everything there is about open source technologies. At University I really appreciated being able to use software which didn't cost me half my student loan to purchase, and having the ability to use these tools to help people recover their data, restore their computers, and provide basic security.
When I was running a business, I appreciated the fact that I could kit out my entire office, from laptops and desktops to servers and smartphones, with open source technologies for very little up front cost. I also appreciate the fact that if something doesn't work I can get in and figure out what the problem is, and fix it - often thanks to the great resources that are shared by communities around open source projects.
I love the community which comes with most open source projects. Sure, like any group, most communities will have some unsavoury characters, but on the whole they are a positive, helpful and driven communities which exists for the benefit of others - something which echoes through from my own Buddhist ethics.
So many people use open source tools in their day to day life but never know anything about what goes on underneath the surface, which I am keen to change.
I also see so many folks really struggling to find their way into contributing to open source, even when they really want to, especially if they come from a minority group. I'm working to try to change that, so that everyone can find a way to give back to open source with whatever skills they have to offer.