Your casing has a lot of holes, that might be good for the fan ventilation (obviously), but that's not good for dust and liquids. Put the computer somewhere where your interactions with it is minimal, that way, when you shed skin and hair, that shit won't find its way into your computer, and also do this to remove the risk of liquids getting in, e.g., spilled drink.
Oh and get an hard drive to go along with your SSD, because SSD has limited writes (more-so than HDs). The SSD is for heavy programs, e.g., operating system, applications, games, and not soft shit like photos, music and videos.