This one is being put out there for the benefit of your comfort. Taking a selfie often requires holding your camera at arm's length, which quickly becomes tiresome if you are using heavy camera equipment. A lightweight camera, such as an advanced compact camera or a mirrorless option is a reliable choice if you need something that is lightweight and manageable but still enough of an upgrade in quality compared to your smartphone camera.
Lighter and more portable gear is also less likely to be left behind at home, so you can start producing high-end selfies as you travel or go about town, not just in the comfort of your bathroom.
Top tip: Lighter camera gear is easier to manage in conjunction with portable support devices, such as selfie sticks, which should definitely be added to your kit if you are looking for the best angle for your selfies.