Building your own PC can be a rewarding and cost-saving experience. You get to pick out components, and a PC's assembly isn't as daunting a task as you might think. However, it is time-consuming, and if you're doing it for the first time, it can be scary, and there is some risk of damaging expensive components. If you don't want to invest the time into part sourcing, installation, and troubleshooting, you might be better off buying a pre-built system.