Oh, reader, so many things. So many, many things not to like. Gaming PCs are still only computers, after all, and computers break, often and for reasons that may be invisible to the most intensively trained eye. Introduce this volatility to a line of work that involves handling a lot of sometimes heavy, usually expensive equipment, and enjoying those little pleasures will eventually come at a cost. Namely, time spent dealing with arcane troubleshooting practices and the occasional spot of minor personal injury.